What did I do now?

T3n5oR · 07-18-2007, 11:56 AM

Engine woes rnd. 2...

I was rallying on WOT and everything seemed fine, when i let off the throttle, it started backfiring way bad and running extremely rich. now it sounds like maybe a cylinder isnt firing cause its running really ruff, has power loss and smells funnier than usual.

any guesseS? where do I start?

T3n5oR · 07-18-2007, 12:01 PM

could it be water in the fuel?

T3n5oR · 07-18-2007, 12:23 PM

my motor's torched eh?

Vesticles · 07-18-2007, 12:25 PM

yep

bbaCJ8 · 07-18-2007, 12:38 PM

Check for oil in your coolant and coolant in your oil. Check your plugs to see if they have nasty sh1t all over em....or that the important parts are still even there. Run a compression test. Tear it apart and see what you blew up. Just swap the sh1t for something bulletproof since you obviously abuse the crap outta that motor.

SilverXJ · 07-18-2007, 12:40 PM

Getting any CELs?

OkLaHoMaTJ · 07-18-2007, 02:16 PM

Quote:

Originally Posted by T3n5oR

Engine woes rnd. 2...

I was rallying on WOT and everything seemed fine, when i let off the throttle, it started backfiring way bad and running extremely rich. now it sounds like maybe a cylinder isnt firing cause its running really ruff, has power loss and smells funnier than usual.

any guesseS? where do I start?

Hey sounds like Deja-vu!

When I first installed the 5.13's in the YJ I went to the river and found a huge stretch of flat sand. I hammered the throttle and rowed through the gears until shifting out of third at 75 or so. After that the YJ ran like absolute shiat. I drove home with about 4 cyl firing for about 2 hours on the interstate

. I got home and tore the fuel rail apart and literally dumped nasty hard shiat out of the fuel rail. I had every injector from the 3 through 6 clogged (I pulled them and they were nasty). After cleaning everything multiple times (the fuel rail, injectors, and a new fuel filter) I put everything back together. After a couple hundred miles it happened again. I cleaned everything again and it went away.

I must have jarred some gunk loose would hitting the whoops at 60+

SilverXJ · 07-18-2007, 03:38 PM

Quote:

Originally Posted by OkLaHoMaYJ

I had every injector from the 3 through 6 clogged (I pulled them and they were nasty).

That is one thought I had too.

T3n5oR · 07-18-2007, 03:44 PM

so, i swapped plugs, no help, there seems to bee coolant leaking from around the HG, that is my bet so far. anyone done a head gasket swap? how hard? special tools?

T3n5oR · 07-18-2007, 03:44 PM

Quote:

Originally Posted by bbaXJ

Check for oil in your coolant and coolant in your oil. Check your plugs to see if they have nasty sh1t all over em....or that the important parts are still even there. Run a compression test. Tear it apart and see what you blew up. Just swap the sh1t for something bulletproof since you obviously abuse the crap outta that motor.

coolant in the ehxaust, no oil in coolant or vice versa. i dont have 20G for a LS1 and NV4500 right now, though I am taking doantions...

SilverXJ · 07-18-2007, 03:50 PM

Quote:

Originally Posted by T3n5oR

so, i swapped plugs, no help, there seems to bee coolant leaking from around the HG, that is my bet so far. anyone done a head gasket swap? how hard? special tools?

Not too hard.. only special tool is for the quick release on the fuel rail. The best way by far is to pull the head and manifolds as one with an engine lift.

remove crap on top of valve cover (cable, hoses, etc). Remove spark plug wires. Remove coolant hoses. Disconnect wiring from throttle body. Disconnect manifold from exhaust. Remove valve cover. Remove rocker arms and push rods (keep them in order too). Remove 12 point 1/2" bolts. Remove head and manifolds as a unit. Remove gasket. Clean gasket surfaces. Install new gasket, reverse operation. If you need the torque values for any bolts let me know.

-Chris

T3n5oR · 07-18-2007, 05:00 PM

thx! ill start tommorrow, wish me luck!

bbaCJ8 · 07-18-2007, 05:39 PM

Quote:

Originally Posted by T3n5oR

coolant in the ehxaust, no oil in coolant or vice versa. i dont have 20G for a LS1 and NV4500 right now, though I am taking doantions...

$20g

There's a brand new NV4500 for sale near me for $1k. I'm tempted to snag it but I want a slushbox for what I'll be doing.

T3n5oR · 07-18-2007, 06:03 PM

Quote:

Originally Posted by bbaXJ

$20g

There's a brand new NV4500 for sale near me for $1k. I'm tempted to snag it but I want a slushbox for what I'll be doing.

yes, but the superchargered ls1 from turnkey is 15G and the randoms...pluss the overdrive i want is 2G, and the shortshift kit is 500, and i need the newer dodgfe one with 5.61 1st, and....

T3n5oR · 07-18-2007, 06:13 PM

how crucial is it to drain the coolant from the block? WTF do you use to get that plug out? its square with a side length of .375"?

T3n5oR · 07-18-2007, 06:31 PM

yes i tried all my 3/8" drives, they are too big...

SilverXJ · 07-18-2007, 08:12 PM

I have never drained it using the plug on the block. Just pull the lower rad hose. If you really want to get it all out, remove the water pump, and lift the truck from the rear.

-Chris

T3n5oR · 07-18-2007, 08:14 PM

lower rad hose will do the trick? thx bro!!!

SilverXJ · 07-18-2007, 08:51 PM

Quote:

Originally Posted by T3n5oR

lower rad hose will do the trick? thx bro!!!

Yeah. Never had a problem with that. It won't drain 100% of the coolant, but about 90% from the block. I tried to fool with the plugs on the block once and gave up. Not enough clearance and that odd size. If you really wanted to perhaps grind down a small socket extension or an adapter.

Are you getting blow by from the dipstick?

Did you ever get the problem with your NO and fuel fixed?

T3n5oR · 07-18-2007, 10:03 PM

k, thx, no blow by from the dipstick ever. ya, got a fuel air meter, then got raine on really hard and had some elec issues, nos system works fine still actually.

SilverXJ · 07-18-2007, 10:14 PM

If there is no blow buy your pistons and rings should be fine. Hopefully all it is is a head gasket. PM me your email and I can send you the directions for the torque sequence and values for the head if you want. The torque goes in steps. Also, you might want to consider going with a Mopar performance gasket as it is thinner and will yield higher compression. Don't know if your NOS will play well with a higher compression though.

Also, I forgot to mention that you need to put some thread sealant on the front most driver side bolt. And it would be best to use new head bolts as they are torque to yield.

I've taken the head off my XJ so much I could probably have it done in 3 hours.

T3n5oR · 07-18-2007, 10:27 PM

damn, thx for the info, wanna come over? ill watch and buy beer!!

SilverXJ · 07-18-2007, 10:28 PM

If you were closer, sure.

T3n5oR · 07-19-2007, 12:37 PM

so when, if ever should i want to start seeing damage? i got the intake and exhaust off, valvecover etc. just gotta pull the head basically... nothing really evident yet.

SilverXJ · 07-19-2007, 02:02 PM

When you pull the head. You might see the head gasket blow out or something else.

nblehm · 07-19-2007, 05:32 PM

Quote:

Originally Posted by T3n5oR

damn, thx for the info, wanna come over? ill watch and buy beer!!

I'll come over and watch and drink beer

T3n5oR · 07-19-2007, 10:45 PM

coolant in the cyl. i think its clean, re-assembling tomm...

T3n5oR · 07-19-2007, 10:45 PM

Quote:

Originally Posted by nblehm

I'll come over and watch and drink beer

gimme a jingle tomm////

nblehm · 07-19-2007, 11:23 PM

alright... I got to do a drug test for a new job in the morning then I am free

SilverXJ · 07-20-2007, 09:00 AM

Quote:

Originally Posted by T3n5oR

coolant in the cyl. i think its clean, re-assembling tomm...

Uhoh.. was it run with coolant in the cylinder? I'm hopping that piston wasn't hyrdolocked.

Try to vacuum all the coolant out and then change your oil when finished.

-Chris

T3n5oR · 07-20-2007, 11:07 AM

putting it back together today, then new fluids...a wing and a prayer.

SilverXJ · 07-20-2007, 11:11 AM

good luck

T3n5oR · 07-21-2007, 11:18 AM

she fired and purrs like a tiger. still got some loose ends to tie up, but not too bad of a job overall.

SilverXJ · 07-21-2007, 11:24 AM

Glad you got it fixed!

T3n5oR · 07-21-2007, 02:30 PM

thx!!!

07-18-2007, 11:56 AM	#1
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	What did I do now? Engine woes rnd. 2... I was rallying on WOT and everything seemed fine, when i let off the throttle, it started backfiring way bad and running extremely rich. now it sounds like maybe a cylinder isnt firing cause its running really ruff, has power loss and smells funnier than usual. any guesseS? where do I start? __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 12:01 PM	#2
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	could it be water in the fuel? __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 12:23 PM	#3
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	my motor's torched eh? __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 12:38 PM	#5
bbaCJ8 old and boring Join Date: Mar 2003 Location: MI Posts: 29,908	Check for oil in your coolant and coolant in your oil. Check your plugs to see if they have nasty sh1t all over em....or that the important parts are still even there. Run a compression test. Tear it apart and see what you blew up. Just swap the sh1t for something bulletproof since you obviously abuse the crap outta that motor. __________________ Gun control is like trying to reduce drunk driving by making it harder for sober people to own cars.

07-18-2007, 03:44 PM	#9
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	so, i swapped plugs, no help, there seems to bee coolant leaking from around the HG, that is my bet so far. anyone done a head gasket swap? how hard? special tools? __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 12:40 PM	#6
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	Getting any CELs?

07-18-2007, 05:00 PM	#12
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	thx! ill start tommorrow, wish me luck! __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 06:13 PM	#15
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	how crucial is it to drain the coolant from the block? WTF do you use to get that plug out? its square with a side length of .375"? __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 06:31 PM	#16
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	yes i tried all my 3/8" drives, they are too big... __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 08:12 PM	#17
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	I have never drained it using the plug on the block. Just pull the lower rad hose. If you really want to get it all out, remove the water pump, and lift the truck from the rear. -Chris

07-18-2007, 08:14 PM	#18
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	lower rad hose will do the trick? thx bro!!! __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 10:03 PM	#20
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	k, thx, no blow by from the dipstick ever. ya, got a fuel air meter, then got raine on really hard and had some elec issues, nos system works fine still actually. __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 10:14 PM	#21
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	If there is no blow buy your pistons and rings should be fine. Hopefully all it is is a head gasket. PM me your email and I can send you the directions for the torque sequence and values for the head if you want. The torque goes in steps. Also, you might want to consider going with a Mopar performance gasket as it is thinner and will yield higher compression. Don't know if your NOS will play well with a higher compression though. Also, I forgot to mention that you need to put some thread sealant on the front most driver side bolt. And it would be best to use new head bolts as they are torque to yield. I've taken the head off my XJ so much I could probably have it done in 3 hours.

07-18-2007, 10:27 PM	#22
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	damn, thx for the info, wanna come over? ill watch and buy beer!! __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-18-2007, 10:28 PM	#23
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	If you were closer, sure.

07-19-2007, 12:37 PM	#24
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	so when, if ever should i want to start seeing damage? i got the intake and exhaust off, valvecover etc. just gotta pull the head basically... nothing really evident yet. __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-19-2007, 02:02 PM	#25
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	When you pull the head. You might see the head gasket blow out or something else.

07-19-2007, 10:45 PM	#27
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	coolant in the cyl. i think its clean, re-assembling tomm... __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-19-2007, 11:23 PM	#29
nblehm Needs moar dagger Join Date: Feb 2004 Location: Littleton Posts: 21,804	alright... I got to do a drug test for a new job in the morning then I am free __________________

07-20-2007, 11:07 AM	#31
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	putting it back together today, then new fluids...a wing and a prayer. __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-20-2007, 11:11 AM	#32
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	good luck

07-21-2007, 11:18 AM	#33
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	she fired and purrs like a tiger. still got some loose ends to tie up, but not too bad of a job overall. __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!

07-21-2007, 11:24 AM	#34
SilverXJ Trail Guide Join Date: Nov 2005 Posts: 743	Glad you got it fixed!

07-21-2007, 02:30 PM	#35
T3n5oR Cpt Bloody Chaos Join Date: Nov 2004 Location: YARRRR, Crawlorado Posts: 3,954	thx!!! __________________ PERSONA NON-GRATA ~And so it was that I, a wayward throwback to the Mesozoic, was enslaved as a circus freak to entertain you drunken monkeys.~ I made it 15 whole miles in 2013 King Of the Hammers!!!