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Old 07-15-2019, 10:45 PM   #1
pnw_245
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Join Date: Oct 2018
Default Trouble with setting ignition timing for 1978 B21 Kjet

Here's some background: My car blew it's engine a while back and I've since replaced the blown B21 with a replacement B21.

I'm having difficulty setting the base timing unfortunately, I can get the car to run but it doesn't seem to want to idle or run consistently, it cougha, runs for a bit, and then sputters and dies.

Right now I've checked:
- the gears line up with the marks (crank, cam, distributor gear)
- the timing mark on the crank is set to 12 ish degrees
- the cylinder 1 mark on the distributor is pointed towards the water neck (fully retarded?)
- the breakers in the distributor are lined up with each other.

What am I doing wrong? Anything else I can check or try? I'm running out of daylight today but tomorrow I can start fresh.

If anyone has pictures they can share it would be greatly appreciated.

Thanks,

Jonathan
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Old 07-16-2019, 04:42 AM   #2
Otto Mattik
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Quote:
Originally Posted by pnw_245 View Post
Here's some background: My car blew it's engine a while back and I've since replaced the blown B21 with a replacement B21.

I'm having difficulty setting the base timing unfortunately, I can get the car to run but it doesn't seem to want to idle or run consistently, it cougha, runs for a bit, and then sputters and dies.

Right now I've checked:
- the gears line up with the marks (crank, cam, distributor gear)
- the timing mark on the crank is set to 12 ish degrees
- the cylinder 1 mark on the distributor is pointed towards the water neck (fully retarded?)
- the breakers in the distributor are lined up with each other.

What am I doing wrong? Anything else I can check or try? I'm running out of daylight today but tomorrow I can start fresh.

If anyone has pictures they can share it would be greatly appreciated.

Thanks,

Jonathan

http://www.threefattigers.com/Protoc...0TM-Crank2.jpg

https://ww2-secure.justanswer.com/up...1_42381501.gif
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Old 07-16-2019, 11:45 AM   #3
planetman
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Location: Torrance, CA
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It sounds like a fuel system problem and not an ignition problem. It would unusual for the ignition system to work and then fail so quickly when cold.

Are you using a timing light to set the timing?
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Old 07-16-2019, 12:21 PM   #4
pnw_245
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I haven't been able to get the car running long enough to use a timing light, but part of the problem was caused by me! I had the firing order reversed and the distributor wasn't set up properly, which was a novice mistake. This morning I'll try again, and report back
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