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| | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | I have a '47 GMC 228 in my 41 AK and it has started to "cough" when doing a smooth acceleration at between 1100 & 1500 rpm. Have check electrical, vacuum and other visible areas. Doesn't do it everytime does it about 50% of the time. Could a intake valve be sticking ? | | | | | Joined: Oct 2021 Posts: 6,699 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,699 | Change out your condenser or get one of Jon G's 200,000 hr jobs.
It may or may not be the problem but it won't hurt. Condensers ar pure junk these days - even brand new.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | Where can I get one of his condensers? | | | | | Joined: Apr 2005 Posts: 7,440 Bolter | | Bolter Joined: Apr 2005 Posts: 7,440 |
Martin
'62 Chevy C-10 Stepside Shortbed (Restomod in progress)
'47 Chevy 3100 5 Window (long term project)
‘65 Chevy Biscayne (Emily)
‘39 Dodge Business Coupe (Clarence)
“I fought the law and the law won" now I are a retired one!
Support those brave men/women who stand the "Thin Blue Line"! Hug a cop!
USAF 1965-1969 Weather Observation Tech (I got paid to look at the clouds)
| | | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | | | | | | Joined: Oct 2021 Posts: 6,699 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,699 |
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Feb 2011 Posts: 583 'Bolter | | 'Bolter Joined: Feb 2011 Posts: 583 | I had a bad lobe on the camshaft for an exhaust valve. When the intake valve for that cylinder would start to open it would cough up the carburetor. Would not do it when the engine idled.
Rick
1939 Chevrolet Stake Truck
| | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | ronsway Might try a dose of marvel mystery oil in the fuel,check valve clearance,that condenser,look close at your valve action maybe spot a bad lobe,see if your push rods are rotating as it idles,plugs in good shape ?, carboned up on valve stem, accelerator pump may have a void before it shoots,exhaust system blocked ,maybe even a plug wire that's weak. | | | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | I got a condenser from Jon G. (thanks). I haven't had a chance to try. Thanks for add'l info will keep working on it. | | | | | Joined: Mar 2004 Posts: 256 'Bolter | | 'Bolter Joined: Mar 2004 Posts: 256 | Have you pulled/inspected the spark plugs? | | | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | I put the condenser in took the truck for a ride...the "cough" didn't happen??? | | | | | Joined: Dec 2018 Posts: 2,450 'Bolter | | 'Bolter Joined: Dec 2018 Posts: 2,450 | flatblu4748 You know I never hardly ever look at my plugs,use HEI on about 5 235 engines and for several years too. I look and they're rusty from not being even turned. | | | | | Joined: Oct 2021 Posts: 6,699 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,699 | Looks like you may have solved the problem. How many miles on the other condenser?
Next step, get one of Jon G's Condensers.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
| | | | | Joined: Jul 2019 Posts: 83 'Bolter | | 'Bolter Joined: Jul 2019 Posts: 83 | I guess about 1000 miles. I am sure it was Chinese , got it a NAPA store. | | | | | Joined: Oct 2021 Posts: 6,699 'Bolter | | 'Bolter Joined: Oct 2021 Posts: 6,699 | Ya, they're all Chinese crap. My NGK condenser failed in 1500 miles.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
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