Reply With Quoteduh duh duh as in missing????
or running out of fuel
or???
Someone please help. Motor is a 327 SBC and when I cruise around 3200-3800 RPM it runs fine and then it goes duh-duh-duh then runs fine for a little longer and then duh-duh-duh. When it is doing this, if I open it up all the way, it doesn't do it. I've had the distributor curved, and it did it before and after the dist. work was done...
What do you guys think it could be?
duh duh duh as in missing????
or running out of fuel
or???
Duh duh duh?
Sounds like somethings retarded.
Duh duh duh?
Sounds like somethings retarded.
Duh duh duh...
Duh duh duh?
Sounds like somethings retarded.
Damn, I knew that was coming. For a lack of a better way to describe it.
It may be fuel, but what get's me is if it is doing it I can gas it and it goes faster, just cruising, it does it. It slows down a little when it does it then picks back up. I think it is ignition related but maybe fuel...I don't freakin know. It's hard to describe but the motor sounds different when it does it. I also don't notice it till I've ran it for a bit...
if it only does it when warm i would think its fuel related. pull the plugs and see what they look like. if they are hot i would go up 4 jet sizes in the primary just to see if anything changes. even if the plugs look perfect i would change something to determin what its not
So, it could be carb related? Maybe, I bumped the jets up 2 sizes already, I guess I'll try to fatten it up more and then check the plugs...
Start with new sparks plugs and check all spark plug wires and connections.
Try it again.
Is there a vacuum advance diaphragm on the distributor?
Try changing the coil, it can fool you and it is a classic heat related Duh Duh Duh deal.....All joking aside, I've had this stump me before as the boat warmed the thing ran worse and worse. Coil.
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