1985 XJ700 X Looks like blowen head gasket

dominicapavlova · Jun 8, 2023

Timbox said: ↑

Did a cold compression check again today 1,3 &4 were 130 psi but #2 was only 90. Warmed the bike up, and #2 came up to 125 psi the others stayed close to the same. I still think that #2 is the bad cylinder. When I pulled the spark plugs it seemed that 1 & 2 were wet and it was not fuel.

Drained and removed the radiator and did a limited run of the engine, not as much smoke or white smoke but still there. Could have been leftover water/oil in the exhaust pipe but can't be for sure. The bike did run a lot better for the short time I had it going.

Drained oil (new oil before starting and trouble shooting) and no water in the oil, very dirty for as limited of running the bike had. Always good to do a little oil flush. The coolant was clean and had no oil in it, so I am a little confused. I would have thought I would have had coolant in the oil or oil in the coolant if I had a blown head gasket. Something is making her run not correct and it is not the carbs, no popping, backfire ect.. that comes with the carbs. Just trying to find out why I have either oil smoke or water smoke in the exhaust.

Ordered manual, pulled coils, carbs and valve cover, at this point I will hold off until the manual gets here.
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Hi Timbox. Did you get the head gasket done? You're in the UK aren't you? I have same problem and need help...advice

Timbox · Jun 9, 2023

@domincapaviova,

I was just trying to help you out with your bike. I live in the USA. Just trying to help you trouble shoot your bike so you don't have to throw money at it to fix it. Just take your time with good trouble shooting and take it one step at a time.

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1985 XJ700 X Looks like blowen head gasket

dominicapavlova New Member

Timbox Well-Known Member

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