Quote:
Originally Posted by ndutton
. . . . by closing a fuel valve and letting the engine run until it starves itself of fuel but that's not my point. Thus far you've said nothing that condemns the fuel pump so maybe not so fast on replacing it. Of course you can if you want, just that your reports do not fit a non functioning pump.
Examples:
It has to crank forever to get it to start You do not need a functioning fuel pump to start the engine. It has ample fuel remaining in the carburetor bowl to start and run for a minute or more without any fuel pump operation. My question about shut down procedure confirms there's fuel in the bowl.
ran it under load for 30 mins and nothing Not likely with a non functioning fuel pump. It's a remote possibility with a fuel tank situated so a strong siphon exists but I wouldn't count on it.
Your starting fluid test and dry #1 plug both confirm a fuel problem but let's not jump to conclusions it's the pump. It's possible it is, just that nothing's conclusive yet. Your symptoms may be due to other causes, even a combination of causes. Hard starting may be caused by a poorly functioning choke not closing all the way. A non-functioning fuel pump may be due to a failed oil pressure safety switch (OPSS). I encourage you to explore the entire fuel system before replacing things, home in on the real problem first. A fuel pressure gauge immediately ahead of the carburetor would answer a lot of questions about now.
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Hi Neil..
Very good suggestions... I am new to all this, not very mechanical minded, but I do like to solve problems and I'm not afraid to get dirty and learn from all you good folks on this forum.
Let me ponder on you advice... just as you advise in regards to the fuel pressure gauge, I don't have one at the moment.
So, If I'm going to change things out might as well replace everything and add on the gauge.
I do like the peace of mind... and not a big fan of being dead in the water other than my sails to move.
I'm fortunate enough to have a partner who says "change it all if necessary"
I'll get back to you after source out a fuel gauge... that can read the low PSI...
Cheers
Mel