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Engine failure

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Kawasakiboy
new poster
Posts: 6
Joined: 13th Feb 2018
Location: Navan

Engine failure

#1 PostAuthor: Kawasakiboy » Fri Nov 24, 2023 8:12 pm

Why would I loose equal pressure on all
4 cylinders. it blow oil out tru the
breeder pipe & hasn't ran since it's a gpz 1100 (83)

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zed1015
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Posts: 3815
Joined: 2nd Nov 2005
Location: Somewhere between Scunny and Goole.

Re: Engine failure

#2 PostAuthor: zed1015 » Fri Nov 24, 2023 8:28 pm

Could be a number of causes depending on the circumstances at the time of the pressure loss.
Likely suspects if the bike was being ridden are partial heat seizure leading to ring and bore damage or bent valves due to camchain tensioner failure etc.

gray
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Joined: 22nd Mar 2006
Location: Stirling Perthshire

Re: Engine failure

#3 PostAuthor: gray » Mon Nov 27, 2023 7:46 pm

if it happened after a long layoff, could be the rings are gummed up and not gripping the bores well , with compression loss and a lot of blow-by, causing crankcase compression and hence oil blowing out the breather
gray


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