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Showing results for tags '18 auto'.
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So after using our 18 auto last week and it running fine we headed down to the cabin this week and wanted to fine tune the PTO adjustment... thats when the fun started This week the tractor would start, w/ choke, and run for 10 seconds or so then die.... until it died it sounded fine then just putter out... tried it without choke and that had no effect... some of the stuff we have done : We rebuilt the fuel pump a couple of weeks ago... its the original fuel pump... we replaced all the fuel lines and the fuel filter at the same time. The gas tank is also original... We installed a new coil (the old one was leaking fluid but seemed to work) and re-gapped the points last week as well.. after scratching our heads we pulled the carb and cleaned it and adjusted the idle and main jets back to factory specs... the idle jet was set to 2 1/2 turns and the main jet was set to 4 1/4 turns before we set the idle to 1 1/4 and main to 2 turns... that might explain why the plugs were so black when we pulled them... I check the compression on both cylinders and they were both around 95 - 100 psi... Cleaning and adjusting the carb had no effect... it would still fire run for 10 seconds then quit... So here are my thoughts... even with the fuel pump rebuild its not putting out enough pressure... I hooked up a mityvac to the fuel line and did not see much pressure...not the 4 PSI I think is needed... more like just 1 or 2 PSI... I also hooked the mityvac up to the crank case vacuum line and saw a strong pulsing... The original gas tank is a bit rusty... I'm not sure if there is a filter in the gas tank that might not be allowing fuel to flow fast enough... I'm thinking if replacing the fuel pump with an electric one... it might not be the problem but I figure it shouldn't hurt I'm also thinking of pulling the gas tank and replacing it with a boat gas tank until I can clean and seal the current one... I'm thinking (doing way to much thinking ) that these will help but I want to hear others opinions... to me it seems like a fuel delivery problem... do others think this might be the case? if anyone has switched to an electric fuel pump I'd like to know which one... really any help would be appreciated thanks in advance...