Maiden voyage yesterday and ran 16 miles fishing in Lake Erie. Upon returning to port, I reduced the throttle as I approached the pier heads. After a few seconds, I noticed the RPM increased 200 RPM without a change in throttle position? I went to idle speed and about 50ft from the boat ramp, it stalled an would not start. We drifted to the dock without issue and found gas on the intake and around the accelerator pump of the carb. Had the fuel pump rebuilt over the winter, could excessive fuel pressure be an issue?
If the needle and seat hung open (Trash in fuel) it overflowed. Are you sure it's a quadrajet? Don't see many issues with them as they have a filter at the inlet, unless somebody previous removed it. But we've never seen it all.
I'm certain it's your problem tho. Time for a rebuild and cleaning. Hope this helps you.
Thanks for the information Lee. It’s definitely a quadrajet. Replaced the in-line and canister filters this spring. Maybe I stirred some dirt up by doing that. Know of any good rebuilders? My local guy passed away recently. I’m in the Akron Cleveland area.
@Bill Wise I do not in your area. Im in NC. I use Guaranteed Carburetors out of FL. Had great success with them.
Bill,
You have the best qjet builder a round right in Mt.Vernon Ohio. Go to the resource tab and click on vendors then look for Cliff’s High Performance you won’t regret it!
Thanks a million. I'll check it out.
Bill. I’m in Akron. I can walk you thru it.
Thank you. So I’m dumb enough to try anything, so I bought a kit and a Qjet manual. I rebuilt it and and set the air/fuel idle with a vacuum gauge. Set the float level. I ran it on Portage Lakes. Idled and ran much better until I hit wide open throttle. It ran 42 mph then would intermittently surge. If I backed off the rear barrels, it would run fine. Not sure what’s going on there.
Bill if its surging at high end either a filter is clogged or the float is set too low. What you have is a demand exceeding the supply.
Lee
All the filters have about 2 hours on them so I will recheck the float level.
I re-checked the float level and it was to specification. I was Walleye fishing yesterday and it initially started and ran fine. After moving several times it would not start. I found if I held the key on, it would briefly run. My thought was either key switch or ballast resistor. I found the connection to the resistor was very loose so I re-crimped and cleaned the connection and it started right up. On the trip back to port, I briefly ran at wide open throttle and the surging issue was gone. 4400 RPM @ 41mph. So I can only surmise that the surging was caused by the intermittent connection to the ballast resistor.