biederboat
Petty Officer 3rd Class
- Joined
- Feb 13, 2005
- Messages
- 83
I thought I'd post a new topic on this as it's hopefully narrowed down a bit. Thanks to all those who helped me and, yes, it does have fuel/water separator with a new filter. Here's where I'm at now:<br /><br />Motor basically starts "semi-okay" in the driveway. It idles at about 1100-1200 rpm with just cooling water hooked up (is this too high?). It does seem to "miss" more than it should, about every 2-3 seconds there a pretty good interruption to the idle. I double checked compression, still good, all spark plugs look like they're getting good oil and they all definitely have good spark (pulling the plug wire gives me a good zap!).<br /><br />The two "indicators" are 1) when I pull individual plug wires while running, only cyl #4 brings it to a stop. #1 and #3 slow it a bit, #2 doesn't seem to have any effect so maybe this one has a clogged jet? Could it be the air/fuel mixture screw alone that would cause this? I have them all set on about 1 1/4 turns out from closed, factory manual says 1 to 1 1/2 turns.<br /><br />Indicator #2 is that maybe the fuel pump is getting weak. After idling a while, the motor sometimes just quits and it seems like when I open the bowl screws only a bit of fuel runs out. Also, cyl. #4 being at the bottom would maybe have it get the most fuel (gravity feed?)? But when I pump the primer bulb, it's always full of fuel and I can squeeze it until it's firm and it doesn't help it idle any smoother or anything so maybe it's not an issue? If it were a fuel pump problem couldn't you temporaril bypass this by squeezing the primer bulb?<br /><br />Well, thanks again for any assistance.<br />Biederboat