No spark on 86
Thread Starter
Racer
Joined: Jul 2005
Posts: 362
Likes: 1
From: Montreal quebec
No spark on 86
So, I did some things on my 86. Had to change the head gaskets so I thought, why not at the same time change the heads themselves, cam, put headers, air pump eliminator, intake manifold hi-flow, hi-flow runners...
I also had a chip made by pcmforless.
Now, I have put pretty much everything back together. The battery works, everything lights up, the engine turns but I have no spark.
Any ideas what I should check? Any typical mistakes I could have made???
Thanks for you help
I also had a chip made by pcmforless.
Now, I have put pretty much everything back together. The battery works, everything lights up, the engine turns but I have no spark.
Any ideas what I should check? Any typical mistakes I could have made???
Thanks for you help
Le Mans Master
Joined: Mar 2004
Posts: 5,107
Likes: 171
From: Dublin CA
Start with distributor. Check for wires not plugged in 1) there is a four wire pigtail I believe behind the distributor 2) are the wires plugged into the distributor itself? Do you acturally have a hot wire to the distributor?
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The cap has a terminal labeled "BAT". There is a large pink wire that plugs in from below, like the 3 wire plug, to the outside of the three wire plug, to power the ignition system. The tach filter plugs in next to it, where the cap is labeled "Tach".
RACE ON!!!
RACE ON!!!
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 249
From: Summerland B.C. Canada
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by lange
Thx CFI EFI had forgotten the pink one started right up need to get the timing right as she stalls right after starting up
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Race Director
Joined: Jun 2005
Posts: 17,640
Likes: 1
From: Lenoir City TN
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Thread Starter
Racer
Joined: Jul 2005
Posts: 362
Likes: 1
From: Montreal quebec
Car still dies after start up
Hello ladies and gents the car still dies after start up.
I reset the timing as told in previous thread but still cant get it to run correctly.
I removed the AIR pump and put in replacement pulley so alot of the anti pollution is out.
I plugged all the vaccums but still not luck.
If I hold the gas down it will run but will back fire in the intake big time.
I set the baseline timing by having #1 at TDC then put the distributor between #1 and #8 on the distrubutor. I have rechecked it 5 times still no luck.
Does the distrubutor have only one spot that it will fit on the cam ( it sure seems that way ) ?
Any ideas help would be greatly appreciated...
I reset the timing as told in previous thread but still cant get it to run correctly.
I removed the AIR pump and put in replacement pulley so alot of the anti pollution is out.
I plugged all the vaccums but still not luck.
If I hold the gas down it will run but will back fire in the intake big time.
I set the baseline timing by having #1 at TDC then put the distributor between #1 and #8 on the distrubutor. I have rechecked it 5 times still no luck.
Does the distrubutor have only one spot that it will fit on the cam ( it sure seems that way ) ?
Any ideas help would be greatly appreciated...
Team Owner
Joined: Jan 2003
Posts: 20,324
Likes: 249
From: Summerland B.C. Canada
It has to be on the compression stroke. Could you see the timing mark on balancer when you set it to # 1 ??
Le Mans Master
Joined: Oct 2003
Posts: 6,130
Likes: 2
From: seattle WA
Sounds like an either or......first the distributor will fit into more than one slot.....lining up the oil pump shaft with a long screw driver helps, one other thing, you put on new heads, are you sure you got your valve lash set properly? better lose than tight.
Instructor
Joined: May 2001
Posts: 136
Likes: 0
From: Raleigh NC
besides the previous suggestions I have two more.
Simple one....could the crankshaft damper be failing and the TDC mark is really not where it is supposed to be?
Hard one....are you absolutely sure the cam is installed correctly? Did you get the timing gears and chain back on in the correct position? If it is off one tooth you are going to have problems.
Simple one....could the crankshaft damper be failing and the TDC mark is really not where it is supposed to be?
Hard one....are you absolutely sure the cam is installed correctly? Did you get the timing gears and chain back on in the correct position? If it is off one tooth you are going to have problems.
Last edited by DaveD; May 13, 2008 at 06:25 PM. Reason: spelling
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by lange
Hello ladies and gents the car still dies after start up.
I reset the timing as told in previous thread but still cant get it to run correctly.
If I hold the gas down it will run but will back fire in the intake big time.
I set the baseline timing by having #1 at TDC then put the distributor between #1 and #8 on the distrubutor. I have rechecked it 5 times still no luck.
I reset the timing as told in previous thread but still cant get it to run correctly.
If I hold the gas down it will run but will back fire in the intake big time.
I set the baseline timing by having #1 at TDC then put the distributor between #1 and #8 on the distrubutor. I have rechecked it 5 times still no luck.
Originally Posted by lange
Any ideas help would be greatly appreciated...
RACE ON!!!
Thread Starter
Racer
Joined: Jul 2005
Posts: 362
Likes: 1
From: Montreal quebec
Will try to do timing again according to CFI EFI if that doesnt work will recheck the cam ( almost 100% that was done correctly) as for the valve lash did it this way :
hand tighten till play on rod was gone then gave it 1/4 turn extra as per Comp roller rocker instruction
P.S this is my first V8 push rod engine I'm a convert for the import scene
hand tighten till play on rod was gone then gave it 1/4 turn extra as per Comp roller rocker instruction
P.S this is my first V8 push rod engine I'm a convert for the import scene
