Losing Rpm's

[crabby]

Was out on my buddies boat today 383 stroker all of a sudden she wouldn't turn over 2200 rpm's, felt like it wasn't running on all cylinders, good oil pressure , didn't run hot, pulled valve covers everything looked good, plugs were fine could it be a blown head gasket

 

[carpshooter1]

Check fuel pressure

 

[josh]

Broken or stretched throttle cable? Or frozen shut secondaries. I have had this happen before, but I was still able to turn 4000.

 

[Joe]

Where you running dry real hard? If so you may have gone in to detonation

 

[crabby]

Gonna run a compression check tomorrow no not runnin real hard at all just no power there,

 

[Rich Andrews]

mud dabbers in the fuel line...

 

[flying fish]

If possible, you may want to try running the engine again and see if you have the same problem.

See if the engine repeats this behavior. JMO-

 

[bondsman]

is this dd or reducted crabby? what was max rpm to begin with?

 

[crabby]

Boat is dd Bonds turned right a 3000 rpm's

 

[bondsman]

were yall cruising and power dropped while going or were you cruising and stab it and it didnt go?

 

[crabby]

Bonds the motor was running fine pulled up on the bank shut it off fished for a little while started up fine wouldn't turn over 2200

 

[airduds]

Maybe jumped time when you shut it down. That's when it happens.

 

[crowhater]

Maybe jumped time when you shut it down. That's when it happens.

Check compression and do a leak down
check fuel supply and carb for problems
Check your ignition, springs, weights, rotor, cap, wires, plugs.

 

[MYDIXIEWRECKED]

Maybe vapor lock? If it was at operational temperature and you shut it off and let it sit the fuel could have gotten hot in the lines? Just a thought.

 

[bondsman]

does it still idle the same with no noticable rpm change?and the temps never got above normal?was it easy to start after shut down?does he run vacumme advance?

 

[flying fish]

Maybe vapor lock? If it was at operational temperature and you shut it off and let it sit the fuel could have gotten hot in the lines? Just a thought.

good thought-

 

[crabby]

Harder starting , won't idle take your foot off the pedal she stalls

 

[flying fish]

Harder starting , won't idle take your foot off the pedal she stalls

Needle and seat?

 

[airduds]

Harder starting , won't idle take your foot off the pedal she stalls

She jumped time mate. Replace timing chain. I think.

 

[bondsman]

does he run vacumme advance?