Adjusting ignition timing
Adjusting ignition timing
Yesterday i adjusted the timing on my 1989 2.8L. Everything went fine except for a major oil puddle afterwards (probably loosend the 15mm bolt too much. anyway). But what I don t really understand is if I give it 14° advance the engine will run better than if I leave her at 10° or 12°. My question is is it better to have a lower idle speed or a higher one if I adjust it by ear.
Thanks for advice folks.
Thanks for advice folks.
Supreme Member
Joined: Mar 2000
Posts: 13,414
Likes: 6
From: Central NJ, USA
Car: 1986 Firebird
Engine: 2.8 V6
Transmission: 700R4
The timing chain might be worn out, or the outer ring of the balancer may have slipped. I remember a few guys couldn't use 10 degrees advance (stock setting); their cars would barely run, and had no acceleration. They went to 12 or 14 and ran perfectly- but a guy like me with a new chain can run at 10 degrees, no problems.
Senior Member
Joined: Feb 2002
Posts: 904
Likes: 0
From: Sacramento, CA
Car: See pic above
Engine: Too Small
Transmission: Broken
My guess on the oil leaking would probably be the O-ring on the distributor shaft. Mine was leaking, and when I pulled the distributor out, the O-Ring looked just fine. But as I tried to slip it off it snapped, and sure enough on the inside was cracks. After I replaced it, I noticed an increase in oil pressure too, so I think that did the trick.
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