The Ford Barn - View Single Post - Flathead 239 still hard to start after much work...

rjlester · 04-07-2023, 12:29 PM

Update: Cold compression is 80 to 95.

I know what you are saying rockfla, but I think the vacuum leak is elsewhere. I sprayed WD40 liberally this morning on the throttle shaft, no change in idle whatsoever. Not saying the carb isn't the problem, but the shafts are not leaking like I originally though.

I dumped Marvel Mystery oil down the carb, and I could NOT make it stall! It would drink so much of it I just couldn't believe it. There must be another vacuum leak somewhere.

04-07-2023, 12:29 PM	#14
rjlester Senior Member Join Date: Aug 2022 Posts: 254	Re: Flathead 239 still hard to start after much work... Update: Cold compression is 80 to 95. I know what you are saying rockfla, but I think the vacuum leak is elsewhere. I sprayed WD40 liberally this morning on the throttle shaft, no change in idle whatsoever. Not saying the carb isn't the problem, but the shafts are not leaking like I originally though. I dumped Marvel Mystery oil down the carb, and I could NOT make it stall! It would drink so much of it I just couldn't believe it. There must be another vacuum leak somewhere.