Hi I have a 77 merc 700 3 cyl.
I'm working through some typical problems.
i.e.
Not charging - Installed new rectifier now charges high (16.8 V) New battery, clean connections.
Inconsistent Idle - Checked and cleaned fuel system from tank to carbs (2), pulled carbs and installed new needle and seats set float level to book spec. Adjusted idle air bleeds to 1 1/2 turns out. Does not idle hot or cold, engine stalls when approaching idle. I need to keep the warm up lever about half travel, which makes for a hard shift.
Peculiar Starting - To cold start I must move the warm up lever to max and hold down the choke button, starts right away and I can move the lever back to half travel. If I move the lever closer to idle the engine stalls. If I attempt to start the engine with the warm up lever any where but wide open the engine fires but will not run. Fuel supply seems fine.
One thing I noticed was that it is possible to overpower the float valve if I really squeeze the primer bulb hard.
Could the floats be water logged (fuel logged)?
Im looking for info on what type, part number and source of tach can be used to check my idle and WOT rpm.
Any help much appreciated.
Mark
I'm working through some typical problems.
i.e.
Not charging - Installed new rectifier now charges high (16.8 V) New battery, clean connections.
Inconsistent Idle - Checked and cleaned fuel system from tank to carbs (2), pulled carbs and installed new needle and seats set float level to book spec. Adjusted idle air bleeds to 1 1/2 turns out. Does not idle hot or cold, engine stalls when approaching idle. I need to keep the warm up lever about half travel, which makes for a hard shift.
Peculiar Starting - To cold start I must move the warm up lever to max and hold down the choke button, starts right away and I can move the lever back to half travel. If I move the lever closer to idle the engine stalls. If I attempt to start the engine with the warm up lever any where but wide open the engine fires but will not run. Fuel supply seems fine.
One thing I noticed was that it is possible to overpower the float valve if I really squeeze the primer bulb hard.
Could the floats be water logged (fuel logged)?
Im looking for info on what type, part number and source of tach can be used to check my idle and WOT rpm.
Any help much appreciated.
Mark