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engine quit


sgull's Avatar
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04-13-11, 04:11 PM   #1  
engine quit

The four-stroke engine on my pressure washer abruptly quit while I was operating it. Upon trying to restart, the pull cord wouldn't pull, stuck tight. I put a wrench on the flywheel nut and tried to turn the engine manually, but it is stuck tight, won't budge. I suspect a broken rod or something like that maybe. I pulled the overhead valve cover and all looks fine from that view anyway. I guess it wouldn't be a sheared flywheel key otherwise I suppose I'd at least be able to turn the engine manually? What's likely broke, what should I look at first? Oil level is fine.

 
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04-13-11, 07:53 PM   #2  
I think you need to disconnect the pump from the crankshaft to find if the problem is the engine or the pump.
Mike

 
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04-13-11, 11:42 PM   #3  
Agreed. What kind of pump and engine? Most of the cheaper ones aren't worth fixing if the engine locks.


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04-14-11, 08:04 AM   #4  
"Annovi Reverberi triplex plunger pump" on a Briggs & Stratton 1150 Series OHV engine (model number 150212). I'll pull the pump later today and we'll go from there. Thanks

 
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04-14-11, 09:35 AM   #5  
Okay I pulled the pump and tried turning the engine manually again. I see now upon further attempts of turning the engine crank that it will turn both ways but stops after turning about 3/4 of the way around then hits something solid and won't turn any further. So it's not a pump problem. I'll be removing the crankcase cover to inspect things further. Any guesses what I might find?

 
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04-14-11, 09:44 AM   #6  
If the oil level is full, then I have no idea. If the oil was low, then I suspect the rod galled to the crankshaft or the piston galled in the cylinder.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

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04-14-11, 10:01 AM   #7  
Oil level is full. I be posting back let you know what I see in there.

 
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04-14-11, 11:24 AM   #8  
I pulled the head off and found that its a broken exhaust valve, looks like this: http://i207.photobucket.com/albums/b...1/IMG_1562.jpg
Wonder why that happened, what might be a typical reason for a valve to break like this?

 
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04-14-11, 06:02 PM   #9  
The valve stuck open for some reason (probably heat and maybe the guide slid out and held it open), then the piston came up and smacked it and broke it off.


"Who is John Galt?" - Ayn Rand (Atlas Shrugged)

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