Engine Lags when taking off...

[Blu Coburn]

Hello everyone. I have a 2000 Bayliner with a MCM 4.3 Alpha Engine w/ carburetor, and just recently it started lagging real bad when I take off from a dead stop to 3/4 throttle... Its acting like its not getting good fuel as it may run "slow" for 5 or 6 minutes but will finally pick up. You can notice when the throttle start to fully engage as it'll pick up RPM's - then lag back down - pick up RPM's - lag back down... and then just take off. I thought it may be a clogged fuel filter, but I can't seem to find it? It has given me any problems until recently... I've also noticed that its been harder to start. Any advice would be greatly appreciated.

Kind Regards.

Blu

 

[Chris1956]

Re: Engine Lags when taking off...

Blu, You might repost this in the I/O forum. Check to see if the accelerator pump is working. Check the antisiphon valve in the fuel tank fuel pickup.