loud spark knock comming off idle??
#1
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Car: 85 Camaro Z-28
Engine: 6.6
Transmission: 5-speed
loud spark knock comming off idle??
I just got done swaping carb-tpi and im trying to figure out why my car spark knocks loud if i step on it a little from idle but wont do it after that. i figured its either the timing off(i know its not right and i forgot how to set it with the TPI cars) also if its not that, i noticed the drivers side rear 2 injectors seem like there not pulsing. i know all the rest are, it feels like the 2 are but not nearly has much as the other 6..... anyone have any ideas about this?
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Car: Tree Huggers
Engine: Do Not
Transmission: Appreciate Me.
Best to test the injectors. As for the timing, that could very well be it as the ecu will dump timing rapidly in order to stop knock. Base is set by disconnecting the est wire and setting the timing, then re-connect the est wire.
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Car: 1992 GTA
Engine: LS1
Transmission: T56
Axle/Gears: 4.10
Did you swap knock sensors with the correct one??? Have you datalogged the car yet???? Is this just an audible ping you hear?? How much timing do you have and what bin are you running???
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Car: 85 Camaro Z-28
Engine: 6.6
Transmission: 5-speed
Originally posted by razor
Did you swap knock sensors with the correct one???
Did you swap knock sensors with the correct one???
Have you datalogged the car yet????
Is this just an audible ping you hear??
How much timing do you have and what bin are you running???
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Car: 1992 GTA
Engine: LS1
Transmission: T56
Axle/Gears: 4.10
Originally posted by TPIMarow6.6
Yes i bought a new one for it
no
Yes, its loud
Bin?
Yes i bought a new one for it
no
Yes, its loud
Bin?
#6
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Car: 85 Camaro Z-28
Engine: 6.6
Transmission: 5-speed
the whole setup is from an 87 iroc z with a 305 5-speed. the prom was done by john M. @LT1intake.com as for the knock sensor, i purchased a knock sensor for an 87 camaro with a TPI 305 so i am guessing it is the correct one since it is for the same vehicle. but i didnt set the timing so i think it is way off, but i am not sure on the EST wire, is that the connector in the harness by the firewill that is just 1 wire. i looked up a long time ago how to do it but forgot. and as for datalogging, i dont know what i would use to do it. but i went to go out and start it to set the timing earlier, and it wouldnt start, so i checked all the plugs and cleaned them cause i had problem where tons of fuel was dumped into the engine, but i cleaned them then checked for spark and there was none, so i checked power to the coil and there was, so i changed the coil(i had a spare one) and it started up, but it would idle up and down from like 1500 down to 700 and would almost stall then pick back up, if its my TPS sensor thats bad, id be pissed....lol but i need to get it running good before i can go set the timing.
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Car: 1989 IROC-Z
Engine: 5.7L EFI LTR setup
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Re: loud spark knock comming off idle??
Originally posted by TPIMarow6.6
I i noticed the drivers side rear 2 injectors seem like there not pulsing. i know all the rest are, it feels like the 2 are but not nearly has much as the other 6..... anyone have any ideas about this?
I i noticed the drivers side rear 2 injectors seem like there not pulsing. i know all the rest are, it feels like the 2 are but not nearly has much as the other 6..... anyone have any ideas about this?
If an injector isn't pulseing , you will know it . I had a bad one and, the car would barelly hold an idle . I was told this was because it's a batchfire setup. There is a tool called a "pulse tester " . It's a must have ....it tests the mechanicalls of the injector.
Good luck to ya man !
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#8
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Car: 85 Camaro Z-28
Engine: 6.6
Transmission: 5-speed
i knew about the batch fire but it feels like either there not pulsing or just not as much as the rest are. its very weird.... almost like a weaker pulse than the rest. but i dont know, maybe because its the closest to the FPR lol
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