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Sorry it has taken so long for the follow up … I replaced the float switches in the tank and that seems to have fixed the problem… easier said than done, took lots of jiggling and figuring to get it out and back in but I finally got it … almost thought I had the wrong part as the mounting screws...

Sorry one more question before I start palpating my fuel tank ... before you start the motor when the master switch is in the prime/run position should the fast clicking stop after 10 or 20 seconds or just keep clicking? I seem to remember it should stop but now it just keeps clicking... could...

“The first thing I do is put on a glove and get my hand in the fuel fill hole ... “ THANKS ... after 30 years of palpating horses and cows THIS I can do !

Thank you for taking the time with the detailed answer ... I think I followed some of it but as I said not my strong suit ... I did understand that the sending unit it the most likely culprit and I will share that with my mechanic friend ... I have a couple 802s so if that part is...

My 803 has been working fine since major engine work couple years ago (bent push rod) ... has run the whole ranch a few times ... was testing yesterday and during cool down it shut off with the “no fuel” light on ... gauge read 3/4 tank, I topped off the tank good clean fuel... now starts fine...

In

Standby I’ll have to ask

Long term follow up ... reminder 803 smoking and choking down at 50% load ... fuel tank dirty so cleaned and replaced tank, filters, injectors tested ok ... turned out to have broken rocker arm, bent push rod, popped hole in valve cover ... took a long time for the machine shop to work over the...

Advice on alternate sources for parts? I can find gaskets but nothing yet for rocker arm, push rod etc. local Onan parts dealer wants a serial number that is one letter and 4 or 5 numbers? Sorry, silly questions but the easier i can make this for my mechanic the better off I’ll be ... thanks.

OK it took me a long time to get back to this ... along the way we drained and cleaned the fuel tank, changed all the fuel filters etc., ran diesel purge thru the system, still running rough to me so i punted to my mechanic ... he pulled the injectors and had them tested, they checked out ok so...

That stinks, sorry to hear it ... same thing happened to me almost 40 years ago, just a kid out fishing then ... still pisses me off!

Thanks everyone for all the suggestions. I will try them in order starting with fuel filters, temp the cylinders etc. the machine IS very low hour and super clean, could eat off all surfaces and no sign of soot or gunk anywhere before I started ... actually had not been drained before I bought...

newer MEP 803A smokes and bogs down with load ... start with injectors? Hi new 803A owner here, Not much of a mechanic and I haven't found my problem discussed in the threads so please bear with me ... 175 hours on the machine when purchased in online auction, very clean, I drained then topped...