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Thread: FUEL ISSUES! HELP!!
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04-02-2013, 06:25 PM #11
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Pinched return line? Vacuum line hooked to regulator? Vacuum leaks?
'97 Z28, Small Cam, Stock Heads/Intake, EWP, Full Exhaust/Cutout, UMI, SS3600, 3.73s, Toyo TQ, ..slow.
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04-02-2013, 07:10 PM #12
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no vaccum leaks, line to regulator is new. and pressure is good
aint nuthin but a 1995 slowmaro.... that thumps a lil bit
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04-02-2013, 07:32 PM #13
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What is your base fuel PSi? Do you have access to a scan tool? If so, what is injector pulse width? Are you getting enough spark / is timing correct?
'97 Z28, Small Cam, Stock Heads/Intake, EWP, Full Exhaust/Cutout, UMI, SS3600, 3.73s, Toyo TQ, ..slow.
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04-02-2013, 10:00 PM #14
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i do have a scanner, but for some reason it wont pick up on my car. so i dont know any of that. i believe that my fuel psi was around 45. not sure. i cleaned the plugs off tonight and let it run a wile. seemed to do a little better but ill try again tomorrow
Originally Posted by gregpenechar
aint nuthin but a 1995 slowmaro.... that thumps a lil bit
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04-03-2013, 06:18 AM #15
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Which temperature sensor did you replace? There's two - one is only used for the gauge cluster, the other is for the PCM.
- Brian Meissen -
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04-03-2013, 08:28 AM #16
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X2 i must have missed where you changed one but thats definetely where i would look. If the sensor is good check the wiring and the connector. Originally Posted by meissen
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Jesse
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04-03-2013, 11:17 AM #17
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the one on the front of the waterpump is the one i changed. and i checked the wire and it was fine as well
aint nuthin but a 1995 slowmaro.... that thumps a lil bit
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04-03-2013, 01:56 PM #18
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What spark plugs and what is the gap? And I am wondering if the map sensor is either plugged up or reading correctly. I cant figure out which sensor tells the ecm to increase the pulse width on the injectors. my theory is if the map sensor is plugged up or faulty, the engine ecm will not see vacume and think the engine is under accelleration.
Last edited by cholmes729; 04-03-2013 at 02:15 PM.
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04-03-2013, 07:40 PM #19
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I think he said they were fouling at idle in park. Even with a lower MAP reading, it shouldn't dump fuel. I'm still waiting on a picture of the plugs to see if there is actually something wrong.
'97 Z28, Small Cam, Stock Heads/Intake, EWP, Full Exhaust/Cutout, UMI, SS3600, 3.73s, Toyo TQ, ..slow.
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04-03-2013, 08:15 PM #20
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if u can plug in a scaner... check what the sensor is telling the car. if ambient air temp is COLD its gonna dump fuel Originally Posted by 95slowmaro
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