fuel pressure problem.. Maybe
fuel pressure problem.. Maybe So i got my car finally running.. But now it wont really hold idle to well and will sometimes back fire.. Sometimes my fuel pump wont kick on right away.. Im pretty sure i prob. have a short somewhere in that wiring.. Could this cause the car to back fire like that? like a dip in pressure and then it coming back on..
mods are as follows..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
mods are as follows..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
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hook your o2 up and that should clear it up, otherwise the air/fuel will be off on one side, does it run fine before it reaches operating temp? and also cap the hole or hook the vacuum line back up to the opti
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Joined: Mar 2002
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From: A Racetronix dealer near you...
mods are as follows..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
new shortblock with arp rodbolts new bearings gaskets rings etc..
stage 3 ported heads
cc306 cam
1.6 rr
arp headbolts
new opti
csr elec. wp
new wires..
Ill def. get a gauge on the rail.. I am gonna go ahead and order the racetronix harness.. It will only back fire sometimes below 1k rpm when i give it gas.. Like it hesitates a little bit.. could it maybe be a cracked plug? I'll def. give it all a look over..
Get a copy of the GM service manual section on fuel system diagnosis. You will need a multimeter, a good mechanical fuel pressure gauge and some basic tools to properly diagnose your problem.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
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Manufacturer / Distributor of Automotive Fuel Systems, Components & Electronics
Please support a Racetronix dealer near you for personalized service.
>WEB SITE<
^^^^ i will try all the suggestions tonight on getting it going.. Good to know about the racetronix harness.. I went ahead and bought one anyway as i bought the walboro and wanted the harness..
Well i really think i have found the issue.. I didnt have time to get a fuel press. gauge today but im almost sure its the fp wiring.. Sometimes the fuel pump wont prime and when i wiggle the relay it will prime.. The relay is new as well.. I think he wiring at the base of the relay may be bad.. I held the car at 2k rpm..(I have poly motor and tranny mounts) and the car died after sitting there for 45 secs.. turned the key back and then to the run position and sure enough the fuel pump didnt engage.. Wiggle the relay and it came on.. Racetronix harness should be here tomorrow so i look forward to installing that to see if it will help and im going to also see about replacing my relay base..
Racetronix said it once already, but their harness will NOT fix your problem. All their harness does is relocate where the fuel pump draws its power. I would just replace the relay with an OEM one if the wiring looks good. Seems pretty obvious that that is your problem. It's p/n 15306045.
I totally understand that the harness will not fix my issue.. I just am looking forward to installing it and seeing how it helps my car.. haha.. I got a fp relay at advance.. should i look to gm for one? The wiring looked "OK" no cuts but i think im seeing some corrosion..