i need help (lightning)

Adam B · 10-12-2007, 11:07 AM

I have a 2001 Lightning, it has a JLP built motor, stage 3 cams, motoblue 2.75upper pulley, predator programmer, and I really don't know what the lower pulley is. Anyways, it had would bog down when you would get in the boost and I thought it needed plugs so I put plugs in it, TR6s, it had Denso IT24s in it, well turns out that it had water in the gas. So, we dropped the gas tank, got all the gas out, changed the fuel filter, and i drove it down the road and it ran fine for like 7 seconds, then it just developed a dead skip. Before, the bogdown/skip was only when you would get in the boost and now it it is all the time. The only CEL i have it an o2 sensor. I don't want to throw a bunch of parts at it that it doesn't need and I don't want to do anything to hurt the motor. The truck REALLY needs be tuned but I need to get the skip fixed before I put it on the dyno.

EZ SPEED · 10-12-2007, 12:00 PM

Do a compression check to rule out cylinder / valve problems , and this also gives you an opportunity to recheck the plugs again.

btw...what is the plug gap set at?

after checking these things...and you dont find anything post back up on here or call Brad this weekend while he is over at my house and I might can come up with some more things to check for ya.

Adam B · 10-12-2007, 12:09 PM

Quote:

Originally Posted by EZ SPEED

Do a compression check to rule out cylinder / valve problems , and this also gives you an opportunity to recheck the plugs again.

btw...what is the plug gap set at?

after checking these things...and you dont find anything post back up on here or call Brad this weekend while he is over at my house and I might can come up with some more things to check for ya.

I gapped the plugs at 28...Is that too low? I will check those other things. Thanks

QWKSNKE · 10-12-2007, 06:12 PM

Quote:

Originally Posted by EZ SPEED

Do a compression check to rule out cylinder / valve problems , and this also gives you an opportunity to recheck the plugs again.

+1

Do you guys have a scanner on the lot? You should be able to check and see if you might have a coil pack dying

banditmwp · 10-12-2007, 08:40 PM

Quote:

Originally Posted by QWKSNKE

+1

Do you guys have a scanner on the lot? You should be able to check and see if you might have a coil pack dying

Coil packs are a big seller on the 5.4's...trust me on this one

BTW I was at the Oxford O'Reilly today, if I had known that was your truck I'd have had the other Matt send a better fuel filter.

EZ SPEED · 10-13-2007, 04:58 AM

Quote:

Originally Posted by Adam B

I gapped the plugs at 28...Is that too low? I will check those other things. Thanks

Nah, for that truck .028 - .030 would probably be good... since the max boost is unknown

Adam B · 10-13-2007, 04:17 PM

Checked the compression last night and it was perfect on all cylinders. The truck has Accel coilpacks..I put the scanner on it and there are no codes except for an o2 sensor.

banditmwp - no prob..im sure that one will get the job done for now..

QWKSNKE · 10-14-2007, 07:32 AM

Do you have a fuel press gauge in the cab? What is it reading?

Adam B · 10-22-2007, 06:37 AM

It was a coilpack.

EZ SPEED · 10-22-2007, 06:42 AM

glad you figured it out

10-12-2007, 11:07 AM	#1
Adam B Member Join Date: Jul 2006 Posts: 47	i need help (lightning) I have a 2001 Lightning, it has a JLP built motor, stage 3 cams, motoblue 2.75upper pulley, predator programmer, and I really don't know what the lower pulley is. Anyways, it had would bog down when you would get in the boost and I thought it needed plugs so I put plugs in it, TR6s, it had Denso IT24s in it, well turns out that it had water in the gas. So, we dropped the gas tank, got all the gas out, changed the fuel filter, and i drove it down the road and it ran fine for like 7 seconds, then it just developed a dead skip. Before, the bogdown/skip was only when you would get in the boost and now it it is all the time. The only CEL i have it an o2 sensor. I don't want to throw a bunch of parts at it that it doesn't need and I don't want to do anything to hurt the motor. The truck REALLY needs be tuned but I need to get the skip fixed before I put it on the dyno.

10-12-2007, 12:00 PM	#2
EZ SPEED Friends Join Date: Dec 2004 Location: Tempe Arizona Posts: 3,029	Do a compression check to rule out cylinder / valve problems , and this also gives you an opportunity to recheck the plugs again. btw...what is the plug gap set at? after checking these things...and you dont find anything post back up on here or call Brad this weekend while he is over at my house and I might can come up with some more things to check for ya. __________________ 2020 Range Rover Sport HSE P525 Dynamic - Firenze Red - Supercharged 5.0 - 518 HP SOLD - 2010 Camaro SS [/B] - Featured in GM High Tech Performance and Camaro Now Magazines - http://www.superchevy.com/features/g...of-perfection/

10-14-2007, 07:32 AM	#8
QWKSNKE 3v's are slow Join Date: Dec 2004 Location: Here and There Posts: 17,152	Do you have a fuel press gauge in the cab? What is it reading? __________________ 2009 Porsche Carrera S 2008 ///AMG C63.. Eurocharge Tune. RIP 2019 AMG GLC43..wife's 03 F250 SD.. Edge Evo, AFE Stage 1 CAI 08 GT. JBA axle back, FRPP springs, FRPP swaybars.. daughter's 01 Cobra vert... wife's I need a new toy

10-22-2007, 06:42 AM	#10
EZ SPEED Friends Join Date: Dec 2004 Location: Tempe Arizona Posts: 3,029	glad you figured it out __________________ 2020 Range Rover Sport HSE P525 Dynamic - Firenze Red - Supercharged 5.0 - 518 HP SOLD - 2010 Camaro SS [/B] - Featured in GM High Tech Performance and Camaro Now Magazines - http://www.superchevy.com/features/g...of-perfection/

10-13-2007, 04:17 PM	#7
Adam B Member Join Date: Jul 2006 Posts: 47	Checked the compression last night and it was perfect on all cylinders. The truck has Accel coilpacks..I put the scanner on it and there are no codes except for an o2 sensor. banditmwp - no prob..im sure that one will get the job done for now..

10-22-2007, 06:37 AM	#9
Adam B Member Join Date: Jul 2006 Posts: 47	It was a coilpack.