thanks will check everything you said......also I've noticed a small fuel leak on the fuel line that I have to fix.... so will go from there thanks again
On Jun 17, 2:02 am, [email protected] wrote: > along the lines of checking the fuel starvation possibility-pull the fuel > tank pick up tubes and see that they are not plugged or that they do not have > any holes in the pipe that would allow air to suck in if the fuel level was > below the hole. I had this happen once and it took forever to find it. I > believe a tank baffle had gotten loose and over time rubbed a hole in the > pick up tube. These pick up tubes also have a check valve in them usally at > the outlet. I have found them to stick shut also. Hal > > ----- Original Message ----- > From: "waterguy" <[email protected]> > To: "UnifliteWorld" <[email protected]> > Sent: Tuesday, June 16, 2009 6:34:16 PM GMT -08:00 US/Canada Pacific > Subject: [UnifliteWorld] Re: engine problem on 32ss > > So you have an engine that works fine at high rpms while unloaded, but > won't rev up under load. > > First, I assume engine timing is normal, and that all ignition parts > are in good condition (you didn't say if you have electronic ignition > or points and condenser). Be sure that stuff is okay and the plugs > are relatively new. > > If all that checks out, look for a weak spark. Using an insulated > pliers, pull off one of the spark plug leads, start the engine and > hold the lead near a good ground on your engine, away from the > carburetor, fuel lines or fuel pump. You should see a strong, bluish- > white spark arc across the gap. You might need to use an extra spark > plug inserted in the plug lead sheath, then ground the plug to the > block. There are also tools that you remove the plug lead, attach the > tool to the top of the plug, and attach the lead to the top of the > tool - inside the tool is an arc between two electrodes that will show > you the strength of your spark. > > Sometimes an ignition coil can be weak - just strong enough to > generate a spark in an unloaded engine but not strong enough to jump > the gap on a loaded engine. > > The next thing I would check is the mechanical advance on your > distributor. Hook up a timing light to no.1 spark lead, position > yourself somewhere that you can shine the light on the timing marks > and crank pulley, but be where you won't get caught in spinning > belts. If you're in the engine compartment, wear ear protection. > With the timing light going, rev the engine up and make sure the > timing mark on the pulley disappears over the horizon. If you have an > advance timing light (has a dial on the back), you can twist the dial > as the engine revs up to see how far the timing advances. Overall, > you want around 30 degrees mechanical advance; check the manufacturer > specs for the actual amount. > > If the timing doesn't advance, the engine won't rev under load > (although it shouldn't rev well unloaded, either, which is why this is > the second thing I'd have you check). > > Finally, if the timing and advance check out, suspect a fuel > starvation issue. Could be clogged filters, fuel pump not putting out > rated capacity, sticking carburetor float needle, or gummed-up > carburetor passages. --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "UnifliteWorld" group. To post to this group, send email to [email protected] To unsubscribe from this group, send email to [email protected] For more options, visit this group at http://groups.google.com/group/UnifliteWorld?hl=en -~----------~----~----~----~------~----~------~--~---
