YM1510D Bubbles in coolant overflow tank

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TFreeman
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YM1510D Bubbles in coolant overflow tank

Postby TFreeman » Sat Aug 24, 2019 12:48 am

Getting a steady flow of bubbles from radiator into coolant overflow tank and pushing out an excessive amount of water.
Have replaced the radiator cap with a 7psi cap.
What should I try?

Thanks,
Tom

winston
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Re: YM1510D Bubbles in coolant overflow tank

Postby winston » Sat Aug 24, 2019 4:45 am

Likely blown head gasket, could be cracked head but not likely. Did it overheat?

TFreeman
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Re: YM1510D Bubbles in coolant overflow tank

Postby TFreeman » Mon Aug 26, 2019 11:29 am

Yes it did overheat.
Not a lot of bubbles but a steady flow.
Would this cause it to blow out excessive amount of coolant?
As in overflowing catch bottle.

Thanks,
Tom

winston
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Re: YM1510D Bubbles in coolant overflow tank

Postby winston » Mon Aug 26, 2019 2:03 pm

yes.

Crump
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Re: YM1510D Bubbles in coolant overflow tank

Postby Crump » Tue Aug 27, 2019 2:35 am

that's exactly what mine did the first time, blew the lid off the coolant reservoir and emptied all the coolant. I replaced the head gasket without getting the head machined and it just blew a constant stream of small bubbles and would fill the radiator and coolant overflow with black sooty scum.

TFreeman
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Re: YM1510D Bubbles in coolant overflow tank

Postby TFreeman » Wed Sep 11, 2019 8:04 pm

Crump wrote:that's exactly what mine did the first time, blew the lid off the coolant reservoir and emptied all the coolant. I replaced the head gasket without getting the head machined and it just blew a constant stream of small bubbles and would fill the radiator and coolant overflow with black sooty scum.

So, did you end up having to have the head worked?
What was the end result?

Thanks,
Tom

TFreeman
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Re: YM1510D Bubbles in coolant overflow tank

Postby TFreeman » Wed Sep 11, 2019 8:10 pm

Got a new head and valve cover gasket and going to change those out. What should head bolts be torqued to, also the smaller bolts on head?

Crump
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Re: YM1510D Bubbles in coolant overflow tank

Postby Crump » Thu Sep 12, 2019 1:33 am

I had the head machined and valves and seals done, put it all back together and no problems since. I was just pointing out that if your going to replace the head gasket its probably cheap insurance to get the head machined, saves doing the job twice. just my opinion.

winston
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Joined: Mon Feb 01, 2010 7:29 am
Location: North East Texas

Re: YM1510D Bubbles in coolant overflow tank

Postby winston » Thu Sep 12, 2019 5:12 am

head bolts 72-79 ft lbs, head bolt assist 20 ft lbs, rocker arm support 36 ft lbs. This is out of a 169 manual which has a 3t72ha engine. Your 1510 has a 3t72sa. Seems to me they should be pretty much the same but wanting you to know where this information came from. I cannot tell you the difference between the ha and sa.


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