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Boost leak tested, now misfiring at idle&running on 2-3 cyl

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95gstnj

15+ Year Contributor
60
1
Feb 11, 2004
howell, New Jersey
hey, the car is a 98 with a 6bolt. stock injectors, no fuel management. did a compression test earlier on the car when fully warmed up, wot, 150 across the board. regapped my bpr7es's .028, which the car ran fine on before the test, put all back together and started up fine.
a few mins later i decide to do a boost leak test. put the tester on the licp right after the turbo.Tightened a coupler after finding a small leak, held 18 psi fairly decently with a small leak around the magnus intake somewhere. i also wiggled the throttle shaft to check the shaft seals. one leaked a little when i moved it. didnt bother to fix it now b/c of time, and it drove fine with the leak before the test. i put the licp back on the turbo, go to start it up, and it idles really erratically, low enough that my dash lights flicker, backfires alot at idle and whenever i try to rev it. sounds like its running on 2-3 cyl. its not making alot of power right now, so i swapped in brand new bpr6es's gapped to .028. no change.

wires 2&3 are swapped (thats the way i got the car and it ran fine)
tried all diff combos of swapping wires 1,4 & 2,3 etc ran the same reguardless of wires.
a few days prior, i added a bottle of fuel system cleaner
I HAVE NO LOGGER
I already checked for any loose wires, etc i may have disconnected accidentally
throwing a cel, but was doing that before all of this.

I'm stumped.
please, any advice is better than none.
thanks
 
Assuming you kept both coils in the same oder as if it was mounted on the manifold, the firing oder is 4123 going from left to right when looking at them, the oder on the head is 4321 from passinger to driver.
 
Bruce, thanks for posting. Ya know, I knew the wire order, I even have 4123 marked on the coilpack so i dont get it mixed up. But because of your post I decided to check just one more time...... they were in the wrong order.
PROBLEM SOLVED!!!!!!
 
95gstnj said:
Bruce, thanks for posting. Ya know, I knew the wire order, I even have 4123 marked on the coilpack so i dont get it mixed up. But because of your post I decided to check just one more time...... they were in the wrong order.
PROBLEM SOLVED!!!!!!
Good deal. They can play tricks on you especially after you stare at them for a while. ROFL
 
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