Crack and Pop at High RPM's.
06-25-2002, 10:16 AM
#1
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Thread Starter
Join Date: Jan 2000
Location: Davison, MI (near Flint)
Posts: 1,167
Crack and Pop at High RPM's.
When I took my car out this morning and got it on the road I took it above 3000rpm and the thing started popin at the higher band. I can't figure out what would be causing this. I lowered my fuel pressure to 14psi and I am getting an SES light but I haven't checked for codes yet but I will when I get out of work. Any ideas what this would be? Thanks.
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
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1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
06-25-2002, 02:35 PM
#2
Registered User
Join Date: Dec 1998
Location: Arizona USA
Posts: 48
14 psi? Is that a TBI car? (throttle body injection) ..because if you have TPI 14 psi is way too low. I think the 305 TPI motors were set at 39.
Regardless, if your fuel pressure is too low the engine will lean out and detonate.(ping, sputter, cough)
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*1985 Camaro IROC-Z28 H.O. 350 A4 3.73 TPI Accel 58mm runners 24# injectors hughes 700R-4 3000 stall BFG DR's and..
*2000 Camaro Z-28 A4 3.23 MTI lid K&N Flomaster !EGR Ram Air Cutout
Regardless, if your fuel pressure is too low the engine will lean out and detonate.(ping, sputter, cough)
------------------
*1985 Camaro IROC-Z28 H.O. 350 A4 3.73 TPI Accel 58mm runners 24# injectors hughes 700R-4 3000 stall BFG DR's and..
*2000 Camaro Z-28 A4 3.23 MTI lid K&N Flomaster !EGR Ram Air Cutout
06-26-2002, 08:59 AM
#3
Registered User
Thread Starter
Join Date: Jan 2000
Location: Davison, MI (near Flint)
Posts: 1,167
Its for TBI. So 14psi is 4-5psi above stock. But maybe I need my fuel injectors cleaned or something. I will try setting it forward just a little bit and see what happens.
------------------
1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
------------------
1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
06-26-2002, 09:01 AM
#4
Registered User
Thread Starter
Join Date: Jan 2000
Location: Davison, MI (near Flint)
Posts: 1,167
I also have a brand new fuel filter I should install. That might be my problem to, you think?
------------------
1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
------------------
1991 Firebird 305
Eric Natzke
"It ain't Stock"
http://members.aol.com/j007golden/91firebird.html
06-27-2002, 03:38 PM
#5
Registered User
Join Date: Dec 1998
Location: Arizona USA
Posts: 48
Hmmm. Could be. I know I need to replace mine. I 'm actually having nearly the same problem right now....but my car was in storage for a year and a half. I think there is still some bad gas in the tank. Time to drive it out.
------------------
*1985 Camaro IROC-Z28 H.O. 350 A4 3.73 TPI Accel 58mm runners 24# injectors hughes 700R-4 3000 stall BFG DR's and..
*2000 Camaro Z-28 A4 3.23 MTI lid K&N Flomaster !EGR Ram Air Cutout
------------------
*1985 Camaro IROC-Z28 H.O. 350 A4 3.73 TPI Accel 58mm runners 24# injectors hughes 700R-4 3000 stall BFG DR's and..
*2000 Camaro Z-28 A4 3.23 MTI lid K&N Flomaster !EGR Ram Air Cutout
Goodluck!
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