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post #1 of 56 (permalink) Old 07-07-2019, 08:12 PM Thread Starter
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Intake leak

Well i changed the piston and gaskets when i got it but i seem to have a new issue. Im getting the same amount of fuel but I'm like between 15 and 20:1 afr all of a sudden...so I'm guessing a head gasket because I lost about 15oz of coolant in about 30 min of riding and it's not leaking while it sits....and now I cant get it to run right at all. Out of the blue. I didnt have the head leveled last time for money's sake but I think I messed up. Lol I dont see it in my crank case oil but it happened quick so it may not have made a big color change yet.

What do you guys think?

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post #2 of 56 (permalink) Old 07-07-2019, 08:55 PM
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Quote:
Originally Posted by Blayzin212 View Post
Well i changed the piston and gaskets when i got it but i seem to have a new issue. Im getting the same amount of fuel but I'm like between 15 and 20:1 afr all of a sudden...so I'm guessing a head gasket because I lost about 15oz of coolant in about 30 min of riding and it's not leaking while it sits....and now I cant get it to run right at all. Out of the blue. I didnt have the head leveled last time for money's sake but I think I messed up. Lol I dont see it in my crank case oil but it happened quick so it may not have made a big color change yet.

What do you guys think?

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When you torqued the head bolts did you go more than 44 ft-lbs with the stock head bolts....& did you do a re-torquing after 1 heat cycle/riding it for a day ???

And did you use new copper/plated washers on the M10 head bolts as required....???

Also it's a good idea to use oil on the m10 head bolts threads to prevent seizure....!!!

I think it's a blown head gasket due to head bolts stretching...do a compression test...!!

(note service manual)

Replace all the 10 mm cylinder head bolt washers with
new ones.
○The 10 mm cylinder head bolt washers are copper-plated,
and they could leak oil if reused. •Apply molybdenum disulfide oil to the both sides [A] of the
10 mm cylinder head bolt washer and thread [B] of the 10
mm cylinder head bolts.

I recommend KMS head bolts & never worry about blown head gaskets... https://www.ebay.com/itm/Kawasaki-KF...ss!86404!US!-1

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post #3 of 56 (permalink) Old 07-07-2019, 09:12 PM Thread Starter
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Yeah I bought a copper washer kit and replaced every one. I went with the advice u gave 44ftlb. But I did not go back in and retighten them. I put oil on the arp studs when inserting them, and used high temp sealer very lightly.

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post #4 of 56 (permalink) Old 07-07-2019, 09:16 PM Thread Starter
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I bought the newest head studs from arp... they were stronger than the original arp studs. 10mm

I'm hoping to reuse them right? As long as no damage is present....

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post #5 of 56 (permalink) Old 07-07-2019, 09:30 PM Thread Starter
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The moly oil I will buy....I'm looking for it and what I see is a powder, a grease, and an oil additive....which one? I know u said oil but since it's an additive I thought I'd better ask?

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post #6 of 56 (permalink) Old 07-07-2019, 09:33 PM Thread Starter
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Studs are
ARP2000 grade, stronger than the ARP 8740 chromoly!



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post #7 of 56 (permalink) Old 07-07-2019, 09:59 PM Thread Starter
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I'll compression test n the morning

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post #8 of 56 (permalink) Old 07-08-2019, 11:25 AM Thread Starter
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Yup, compression is down to 45 psi. When I put it back together last time it was 67psi.

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post #9 of 56 (permalink) Old 07-08-2019, 12:52 PM Thread Starter
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2 questions....

1. I found that my resivor outlet line was plugged off and all of my lines connected well. It had coolant seeping by my radiator cap and drizzling down the radiator when hot and full. I can see the dried marks. Could this had something to do with the probable blown head gasket??

2. Would you get the head resurfaced? I mean make sure it's not warped... cuz I dont think I'll have a way to do that locally and it's not likely to be cheap.

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post #10 of 56 (permalink) Old 07-08-2019, 07:28 PM Thread Starter
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Definitely a blown gasket. It looks to me as if it wasnt far from blowing a second spot almost opposite of the first one. Those pics are taken untouched. You can see the difference in the black color on the gasket and carbon... the studs broke free at about 42 ft lbs. And my head cover gasket was damaged and I didnt do it. It was brand new. I ordered another one.

Do you guys agree? What do u see??

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