This is a general site search and does not include list archives. | |||||||
|
#1
|
||||
|
||||
Weak Spark
I can't start my car. I pulled the plugs and cranked it to check for spark, and I noticed that its there, but really weak. Where should I start my troubledshooting?
__________________
87 GN,Roller cam, Accufab AFPR, RJC power plate, LS1 MAF,roller rockers, ported stock heads, 60lbs injectors, Turbotweak chip, TCI TC (3200), TE-60 turbo; TinMan CAI PTS Extreme built trans. Aluminum drive shaft |
#2
|
|||
|
|||
Re: Weak Spark
i would check resistance on the coils per procedure and then i would look at all my grounds and power points! but youre at the right place this cats here are sharp iam sure they whill have some good anvice!!!!
__________________
1986 GN STOCK |
#3
|
||||
|
||||
Re: Weak Spark
__________________
Scott Keller - GNTTYPE Founder & Moderator
|
#4
|
||||
|
||||
Re: Weak Spark
What does the coolant temp sensor do? Can it cause a no start condition if its bad? I'm also flooding the cylinders everytime I try to start it. Hince the no start.
__________________
87 GN,Roller cam, Accufab AFPR, RJC power plate, LS1 MAF,roller rockers, ported stock heads, 60lbs injectors, Turbotweak chip, TCI TC (3200), TE-60 turbo; TinMan CAI PTS Extreme built trans. Aluminum drive shaft |
#5
|
||||
|
||||
Re: Weak Spark
Definitely can cause a no start , You need a scan tool in order to read the
coolant temp the sensor is telling the ecm . for example ,if it's 70 degrees outside and your engine is cold, and you plug in the scan tool and read the temp and it says like 32 degrees . Then your temp sensor is inaccurate. The ecm in your car would interpret that as very cold , and it would richen the fuel mixture , thus flooding out your car and of coure a NO START |
#6
|
||||
|
||||
Re: Weak Spark
Thanks.
I installed a scan master a while ago but never got the car running.(head gasket) I don't know how to use the thing except for checking battery voltage. What does the coolant temp page look like?
__________________
87 GN,Roller cam, Accufab AFPR, RJC power plate, LS1 MAF,roller rockers, ported stock heads, 60lbs injectors, Turbotweak chip, TCI TC (3200), TE-60 turbo; TinMan CAI PTS Extreme built trans. Aluminum drive shaft |
#7
|
||||
|
||||
Re: Weak Spark
OK, I replaced the coolant sensor. No more flooding and the spark is strong.
But still no start. A few backfires though. The cam sensor is in straight. I have injector pulse. I think that the cam sensor is just bad. Any thoughts?
__________________
87 GN,Roller cam, Accufab AFPR, RJC power plate, LS1 MAF,roller rockers, ported stock heads, 60lbs injectors, Turbotweak chip, TCI TC (3200), TE-60 turbo; TinMan CAI PTS Extreme built trans. Aluminum drive shaft |
#8
|
||||
|
||||
Re: Weak Spark
If you have injector pulse, your cam sensor is sending a signal.
Make sure the cam sensor is set correctly ... also check fuel pressure...
__________________
Ken Mosher 1987 GN original owner 650+ HP Black 2015 BMW 328xi XDrive wagon 2012 Volkswagen Tiguan (the Tig!) Night Blue Met (sold) 2006 Trailblazer SS Red Jewel Tint 395 HP AWD (sold) 2014 Silverado LTZ Crew 4WD 2012 Honda VFR 1200F Tahitian Blue (sold) 2015 BMW S1000R Racing Red 2013 Honda CBR500R Red (wife's bike) 2014 Triumph Bonneville T100 2003 Harley Davidson V Rod Anniversary Edition |
#9
|
||||
|
||||
Re: Weak Spark
I thought the same thing. But my cam sensor has been repaired with the RJC cam sensor repair kit. Is there anything can be wrong with it. I put the cam sensor in with the cylinder heads off, and I used the cam sensor tool from caspers. I'm pretty sure its in right. I think that the cam sensor was repaired wrong. But I want to be sure before I order a new one.
__________________
87 GN,Roller cam, Accufab AFPR, RJC power plate, LS1 MAF,roller rockers, ported stock heads, 60lbs injectors, Turbotweak chip, TCI TC (3200), TE-60 turbo; TinMan CAI PTS Extreme built trans. Aluminum drive shaft |
#10
|
||||
|
||||
Re: Weak Spark
are the plugs still fuel fouled ??
|
Bookmarks |
Thread Tools | |
Display Modes | |
|
|