runs rough - a little help
Thread Starter
Racer
Joined: Dec 2008
Posts: 319
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From: Topeka Kansas
St. Jude Donor '09-'10-'11-'12-'13-'14,’18
runs rough - a little help
OK
I have a 1972 L-40 350 that has been bored 40 over and has a mild Comp cam and TRW innerards (done in the '90's).I bought her in 2008.
She was running a little rich and and looking at the points and plugs it was time to make a change. She has always ran great with no issues.
I installed new Accel points and condenser and new Bosch Platinum Plus spark plugs.
The plugs were pre-gapped - I checked them all at .035 per spec.
The dwell is set at 30
I have set the advance between 4º and 12º and although it runs seemly OK with the advance at 8º & 12º - it won't accelerate smoothly.
It breaks up under hard acceleration above a certain RPM.
I double checked that I had the correct plugs, points, and condenser and I do.
I didn't check the dwell before I started but the advance was at 12º.
Any ideas would be appreciated.
Mike
I have a 1972 L-40 350 that has been bored 40 over and has a mild Comp cam and TRW innerards (done in the '90's).I bought her in 2008.
She was running a little rich and and looking at the points and plugs it was time to make a change. She has always ran great with no issues.
I installed new Accel points and condenser and new Bosch Platinum Plus spark plugs.
The plugs were pre-gapped - I checked them all at .035 per spec.
The dwell is set at 30
I have set the advance between 4º and 12º and although it runs seemly OK with the advance at 8º & 12º - it won't accelerate smoothly.
It breaks up under hard acceleration above a certain RPM.
I double checked that I had the correct plugs, points, and condenser and I do.
I didn't check the dwell before I started but the advance was at 12º.
Any ideas would be appreciated.
Mike
Thread Starter
Racer
Joined: Dec 2008
Posts: 319
Likes: 0
From: Topeka Kansas
St. Jude Donor '09-'10-'11-'12-'13-'14,’18
was it running like this before your tune up?
No it ran pretty well.
Did you check for a vacuum leak?
No, I will
Mike
Last edited by a17mike; Sep 9, 2010 at 10:54 PM.
Thread Starter
Racer
Joined: Dec 2008
Posts: 319
Likes: 0
From: Topeka Kansas
St. Jude Donor '09-'10-'11-'12-'13-'14,’18
Found problem - I pulled vacuum line off TCS when setting timing and PO had plugged the second outlet on the back of the switch. I inadvertently eliminated his plug, so I had a vacuum leak.
Thanks for all the help.
Mike
Thanks for all the help.
Mike
