I assumed the way he explained the coolant issue that he was talking about crank cavity and pressures from their and not the crankcase transmission cavity .
Do you have coolant in your transmission oil ? If yes it’s time to rebuild the water pump .
I assumed the way he explained the coolant issue that he was talking about crank cavity and pressures from their and not the crankcase transmission cavity .
Do you have coolant in your transmission oil ? If yes it’s time to rebuild the water pump .
78 atc 90/180cc Dickson Full Suspension
76 ATC90/180cc Nicholson
77 atc 90 Dickson Full Suspension
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I’m pretty sure he said he already done that. Even so there are such things as bad new parts. We all been there
If its on the internet its got to be true they can't put any lie's on the internet
That's correct, it was replaced. Before it was replaced there was no coolant in the transmission. I went ahead and replaced the water pump anyway because I had the new parts in the shop.
Finished up over the weekend, head and cylinder came out great and flat. Passed a leak down test. Compression is at 176-180 psi. Started on 2nd kick and sucked a bunch of coolant down again and stalled out less than 10 seconds or so. It won't fire back up because the coolant is in the crankcase. I'm at a loss and have no idea where the problem is.
I’ve run into this a few times were their were hair line cracks in the cylinder / water jackets , only leaked under combustion .
If your sure the head and cylinder are mating good ?
Are you using an OEM or Oem style head gasket the thick one ?
Some of them aftermarket ones are junk .
78 atc 90/180cc Dickson Full Suspension
76 ATC90/180cc Nicholson
77 atc 90 Dickson Full Suspension
84 KLT 110/123cc Powroll Racer from 80s
87 atc 125m stock
84 atc 200x Curtis Sparks
84 atc 200x Powroll My race bike from 80's
83 atc70/108cc Powroll blue Xmas Special
81 atc185s HP-ATC full suspension
Performance Shop is Open PM me for Service
My Feedback http://www.3wheelerworld.com/showthr...ck+shortline10
When you say leak down test, I assume you are referring to a crank case pressure test NOT an four stroke leak down? Secondly, if you are performing a crank case pressure test what are you pumping the pressure up to and for how long?
Have you performed a visual inspection of the cylinder for cracks? Your surfaces are either not flat enough or you have a crack somewhere.
Yes, I am running a crank pressure test, pumping it up to 10 psi for 15 min-20 min just to make sure nothing is leaking. Nothing at all is lost and it holds exactly to what I pumped it up to. No, I didn't check the cylinder for cracks, just made sure it didn't have any scoring going on.
Let's say the surfaces are not flat, wouldn't it leak out of the cylinder head once it's started just briefly because of the pressure?
I guess im going to have to take it back off to inspect it for cracks.
No, 10 psi was the max for 15-20 min. I am getting no leaks anywhere around the head gasket mating surfaces. I am going to take it back off sometime this week to have a look for possible cracks in cylinder somewhere. If it has a hairline crack somewhere can a reboring be done or is the cylinder no good?