221 37 issue

[Tinker]

Originally Posted by FlatheadTed

Screwing them in shouldn't stop the motor as it feeds around the plate, I vote dirt in the idle jets or to small ,also look at the spray tubes ,check the winter and summer setting, Could be a hair line crack in the manifold ? Ted

I'll check this as well. thanks

[G.M.]

Originally Posted by Tinker

I'll give this a shot. thank you.



Geez I hope it's not guides. The engine is a older (4-5 yrs) rebuild with very little miles (500 miles).



It does buck in high gear at low speeds, really anytime its near a "lugging" condition (hills, etc). Also when starting out or whenever the motor drops down to a lower rpm (gear change). If the motor is running a decent rpm it is smooth.

I thought about sticky valves, but compression is 100 across the banks and vacuum test was solid with no flutter. I'm already a MMO believer.

You have the conditions I described. For $5.00 ty the MMO. G.M.

[Tinker]

Originally Posted by G.M.

You have the conditions I described. For $5.00 ty the MMO. G.M.

I've used it for yrs and have two bottles in the shop almost always. It gets a shot every once in a while and on Saturday I did drizzle some down the carb till it smoked out.

I'll try the procedure you mentioned when I get a chance.

I ordered a new intake gasket and I might just open it up if I can't get these other options to work.

[Tinker]

Well followup from this evenings tinkery.

Picked up another ih200 and installed it.

Warmed the truck up some then drizzled MMO for a bit, smoked out the garage (door was open). Good thing MMO smells good. Then let it sit a couple hours.

Fresh (non-oxygenated/ethfree) gas and MMO.

Took it out and drove it. After a bit it leveled out and the hesitation is almost gone. So GM I might owe you a hamburger and a coke! . Strange how the compression and vacuum tests did not pick it up?

Since I did both the condenser and MMO it could be either possibly. But I'm not going to change out that condenser to find out. Popping is gone.

I'll have to see how it runs tomorrow but I have hope now! Might have to finally get some decent mufflers on it.

I do still get a little surging at idle, like a luppy cam.