OneQuikSix
Member
- Joined
- Jun 7, 2001
- Messages
- 348
I've been fixing fuel leaks, TPS issues, and other miscellaneous odds and ends since rebuilding this engine in the past few weeks. Here's my combo:
-109 block
-Full Throttle 210/215 roller cam with HS roller rockers (valvetrain sounds nice and quiet)
-Champion ported iron heads
-Champion ported factory intake
-237 fuel pressure regulator (no pressure gauge though)
-Tomco fuel injectors with green stripe (I think they're 32lbs but not sure)
-Unknown chip
-Unknown in-tank fuel pump
-3" dp-->dual 2.5" catback exhaust
-
Here's the deal. The car ran fine with whatever brand chip, fuel injectors, fuel pump, etc... prior to the engine swap. The only thing that has changed is the heads, cam, and intake. I've verified the TPS and cam sensors are set properly. The car will start without any problem, but it stalls within a couple of seconds. Also, after I get it warmed up by coaxing the throttle blade, the car idles very rough. Once idling, if I give it any gas, the rpm's increase, but the car dies as soon as I let off the throttle. At 2000rpm, the engine sounds very good. I cannot detect any vacuum leaks and the ECM is not showing any trouble codes. Also, I do not believe the car is running too rich at idle. If anything, I'm wondering if it isn't slightly lean. I can't stress enough how good I think this engine sounds (kind of a sinister sounding good
).
I've switched TPS and IAC with new ones with no change in performance. I realize switching the heads, intake, and valvetrain is a major change, but I guess I figured the car would at least idle and be somewhat drivable until I could add a proper fuel system to support my future goals.
Out of sheer curiosity, I unplugged the cam sensor while the engine was running and noticed no difference in idle or the engines propensity to stall after mild revving. I read on here somewhere some people advanced the cam sensor slightly to help with off-idle stumble and stalling associated with larger cams. I'm wondering if this is something I should pursue.
I'm sorry to report I do not have any scan tools at this point. If anyone has any suggestions, I'm all ears (errr...eyes in this case). Thanks as usual.
-109 block
-Full Throttle 210/215 roller cam with HS roller rockers (valvetrain sounds nice and quiet)
-Champion ported iron heads
-Champion ported factory intake
-237 fuel pressure regulator (no pressure gauge though)
-Tomco fuel injectors with green stripe (I think they're 32lbs but not sure)
-Unknown chip
-Unknown in-tank fuel pump
-3" dp-->dual 2.5" catback exhaust
-
Here's the deal. The car ran fine with whatever brand chip, fuel injectors, fuel pump, etc... prior to the engine swap. The only thing that has changed is the heads, cam, and intake. I've verified the TPS and cam sensors are set properly. The car will start without any problem, but it stalls within a couple of seconds. Also, after I get it warmed up by coaxing the throttle blade, the car idles very rough. Once idling, if I give it any gas, the rpm's increase, but the car dies as soon as I let off the throttle. At 2000rpm, the engine sounds very good. I cannot detect any vacuum leaks and the ECM is not showing any trouble codes. Also, I do not believe the car is running too rich at idle. If anything, I'm wondering if it isn't slightly lean. I can't stress enough how good I think this engine sounds (kind of a sinister sounding good

I've switched TPS and IAC with new ones with no change in performance. I realize switching the heads, intake, and valvetrain is a major change, but I guess I figured the car would at least idle and be somewhat drivable until I could add a proper fuel system to support my future goals.
Out of sheer curiosity, I unplugged the cam sensor while the engine was running and noticed no difference in idle or the engines propensity to stall after mild revving. I read on here somewhere some people advanced the cam sensor slightly to help with off-idle stumble and stalling associated with larger cams. I'm wondering if this is something I should pursue.
I'm sorry to report I do not have any scan tools at this point. If anyone has any suggestions, I'm all ears (errr...eyes in this case). Thanks as usual.