Yes. Took a pump apart and cleaned it. Diaphragm is good. Pumps fuel to carb. I only have one carb. The ski will idle and put around. It will start to accelerate when u gas it but then boggs down and sometimes shuts off.Did you take the a-pump apart and clean an inspect the diaphragm in it? Is it squirting has into the carb body’s when you throttle up? Both carbs?
I'm running it off the reserve line. I wanted to rule those two items out. It's was still bogging on acceleration when I had selector switch and fuel bowl filter hooked up.Well there’s never a good time to use seafoam on these.
Have you checked the fuel strainer and on/off valve? Common points to suck air.
Ngk b8esWhat kind of spark plugs are installed?
Ngk b8es
That may be your problem. Mikidymac or someone will correct me if I’m wrong, but I believe you should be running the resistor plugs, which are BR8ES...
I'll get two and try them out. I'll let you know.That may be your problem. Mikidymac or someone will correct me if I’m wrong, but I believe you should be running the resistor plugs, which are BR8ES...
Do you think I screwed up anything by running b8es plugs?Yes, Should be the BR8ES. In theory it can cause interference with the computer.
Changed the plugs and still the same. Boggs and almost shuts off as soon as I accelerate.I don’t think non resistor plugs would have done any damage, it’s just not working properly while they’re installed...
Tested compression today. Two gauges read 120. One gauge read 90. UghhhhI don’t think non resistor plugs would have done any damage, it’s just not working properly while they’re installed...
Put injector oil in cylinder and tested again. Jumped up to 135 psi.I don’t think non resistor plugs would have done any damage, it’s just not working properly while they’re installed...
Can I simply replace the rings?Compression is low. If that 120psi is accurate that’s your problem and time for a new top end.
Yes. All of that is complete. My compression is at 120 psi tho. Here is a picture of the baffle. It has some dry rot going on.Well I’m assuming that all of the following is done at this point. Let us know if anything was missed...
1. Carbs have been rebuilt with Mikuni kits and new needles and seats.
2. Fuel selector and strainer have been bypassed.
3. Plugs have been changed and are the correct resistor plugs now.
4. Plug wires have been trimmed back 1/4” and caps reinstalled.
5. All grey tempo fuel lines have been replaced with black automotive line.
If all of this is correct, I’m thinking there may be a crack or leak in the fuel baffle itself... You’re getting some air somewhere, and that’s the only other place I can think of that it might be coming from...
I was contemplating doing the top end on this now. But I did one more test. I ran the reserve line straight to an external gas can with 93 in it. At WOT the ski just dies. So at WOT I sprayed carb cleaner in the carb and it keeps it running and ripping at high RPM. Let me know what you think. I cleaned this carb and put genuine rebuild kit on it just to be clear.Unfortunately I think Mikidymac’s right. At 120psi, compression is the most likely culprit. If it were the baffle, it would be a crack in the plastic tube, rather than the boot, and it’s pretty unlikely...
I would have the cylinders bored to the next size up rather than try to hone them.