Re: Starts w/o plug, but not with - why?

Posted by Jon H on June 16, 2005 at 11:31:31 from (69.26.18.32):

In Reply to: Starts w/o plug, but not with - why? posted by Hank NWO on June 16, 2005 at 08:17:41:

Does the tractor run well with good power when started ? I have seen an engine with a clogged exhaust system act exactly this way,it would start with a plug removed ,but not fire a pop with the all plugs installed. The engine was a 2 cyl Onan genset. we had run through monsoon rains in the south and returned home to ND in early winter. I wanted to change oil in the motorhome and genset before storing it for the winter, This was early winter and below freezing. tried to warm up the genset before changing oil. It would crank fast,but not run. Had good spark and plenty of fuel,turned fast but would not fire. Finally tried starting it with one plug removed. It started instantly on one cylinder with exhaust pouring out of the plug hole on the other cylinder. Then it dawned on me what had happened. The rain we were running through had run down the back of the motor home and into the genset muffler,filling it with water. This was a below freezing morning and the water in the muffler was frozen solid. I put the torpedo heater on the muffler and reinstalled the plug. After 1/2 hour of heat the genset cranked right up and blew about a quart of Oklahoma rain water out the exhaust pipe. The genset ran fine after that.

Follow Ups:

• Re: Starts w/o plug, but not with - why? Hank NWO 12:34:47 06/16/05 (0)

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