JimC2
Well-known member
- 271
- 255
- 63
- Location
- Collierville TN
Do you have a primer hooked up?
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HELP! Rebuilt engne less than 700 miles. Engine started acting irregular, low vacuum reading, sooty spark plugs. Will no longer idle correctly.
- Thread starter Torisco
- Start date
- 551
- 72
- 28
- Location
- Bishop, California
No...I have no primer set up for the carburetor or fuel system...Just the good old butterfly choke
- 551
- 72
- 28
- Location
- Bishop, California
By the way...I have a back up electric fuel pump if needed and have used it as a sort of carburetor primer at times. Thus may have damaged my carburetor or caused flooding but I only used it once in awhile (suspected vapor lock) and as a mechanical pump failure back up.
To be sure that my fuel pressure is correct and constant (4-6PSI) I have ordered a fuel pressure regulator and fuel pressure gauge to assure the safe use of the electric pump and or mechanical pump at the specified pressure setting. I am starting out with 4.5 lbs.
To be sure that my fuel pressure is correct and constant (4-6PSI) I have ordered a fuel pressure regulator and fuel pressure gauge to assure the safe use of the electric pump and or mechanical pump at the specified pressure setting. I am starting out with 4.5 lbs.
- 551
- 72
- 28
- Location
- Bishop, California
Finally got the old girl to idle nicely after replacing the carburetor, mechanical fuel pump, new coil capacitor and points, new spark plugs, and adjusting timing more than once.
A lot of money to find out that the culprit was a combination of a bad carburetor (accelerator pump seal disintegrated and clogged passage way) as well as over pressure fuel delivery (near 8 -9 PSI instead of the 5PSI that it should have).
With the help of the great Steel Soldiers members, I am now nearing the finish line of this fiasco. The truck is slightly hard starting and stumbles when trying to accelerate from idle to a higher RPM.
I think the timing is off a bit as the idle and fuel mixture screw settings seem spot on. So I get to try my 5-12-24VDC vintage timing light (with spark plug adapter) and will try to make sure the timing is to spec.
A HUGE LOAD OF THANKS AND GRATITUDE FOR ALL THE HELP. I am hopeful that the timing will cure my problem.
A lot of money to find out that the culprit was a combination of a bad carburetor (accelerator pump seal disintegrated and clogged passage way) as well as over pressure fuel delivery (near 8 -9 PSI instead of the 5PSI that it should have).
With the help of the great Steel Soldiers members, I am now nearing the finish line of this fiasco. The truck is slightly hard starting and stumbles when trying to accelerate from idle to a higher RPM.
I think the timing is off a bit as the idle and fuel mixture screw settings seem spot on. So I get to try my 5-12-24VDC vintage timing light (with spark plug adapter) and will try to make sure the timing is to spec.
A HUGE LOAD OF THANKS AND GRATITUDE FOR ALL THE HELP. I am hopeful that the timing will cure my problem.