Rebuilt 22re coolant in intake
May 25, 2018 | 10:14 AM
#1
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From: Frazier Park, CA
Rebuilt 22re coolant in intake
Im sure this question has been asked a million times but here it goes again. Recently rebuild 22re (hg, pistons, rings etc) runs ok but is just dumping coolant. Don’t know if I forgot to hook something up or a bolt somewhere or what. Not too much experience with 22res. Started up, ran fine so I put some coolant in it. After that, just started blowing white smoke. Pulled 123 plugs and they were all ok. Dry. Pulled number 4 and it was just soaked. Started tearing it down and there was moisture on the intake side of the tb. Plenum has coolant in it and manifold has puddles in it. I did cheap out on the hg so could it be that? Or did I just forget to hook something up right?
May 25, 2018 | 12:23 PM
#4
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From: Mogadore, Ohio
Often in your case what happened is that one of the larger vacuum hoses was accidentally swapped with a coolant hose. Check the path of everything that was plugged into the intake plenum. There's the i.a.c.v. that has both air and coolant hoses which could easily be mixed up.
May 25, 2018 | 01:11 PM
#6
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From: Gaston, OR
That definitely makes it difficult to tell, I'd take GSP's advice and hook everything back up, making sure that coolant lines are going to coolant ports. I'd also suggest adding your vehicle info into your signature, and adding your location. There might be someone in your town that could come look at it.
May 25, 2018 | 01:20 PM
#7
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From: Frazier Park, CA
Had it routed to under the throttle body right under the tps. Saw it was a coolant line and saw the corrosion on the nipple under the tb and figure they were a perfect match 😂
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May 25, 2018 | 02:39 PM
#8
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From: Frazier Park, CA
Looking at the intake manifold it looks like a missed a bolt right under the thermostat housing. Could that be it? Don’t see how it would route coolant into my intake but just a thought.
May 27, 2018 | 10:53 AM
#9
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From: Frazier Park, CA
Ok so I put a new intake manifold gasket on (the other one was a paper type and it was wet), threw everything back together and I’m still burning coolant. What other ways can coolant get into the intake other than through the throttle body? I don’t see any other coolant lines. Is the gasket on the Throttle body sealing any coolant ports? Wondering if the gasket might be old. Took the tb off and again, wet. Maybe I can bypass the coolant line to the tb?
May 27, 2018 | 01:11 PM
#10
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From: Mogadore, Ohio
Yes, there are 2 (maybe even 3) fairly large coolant passages into the lower intake manifold. Check out an image of a felpro intake gasket and you'll see the ports that have an rtv gasket, that seals in the coolant (I think the gasket has the words "print-o-seal" on it).
Those passages are for all the coolant sensors threaded into the lower intake.
Those passages are for all the coolant sensors threaded into the lower intake.
May 27, 2018 | 02:07 PM
#11
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From: Frazier Park, CA
Pretty sure you’re right about there being 3. Would a crack in any of those allow coolant to get all the way up to the tb? The fel pro “print-o-seal” is the new one I put in there.
May 27, 2018 | 02:41 PM
#12
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From: Frazier Park, CA
Alright well throttle body bypassed and still does the same thing. I guess it’ll come back apart tomorrow to check intake manifold for cracks. Gets worse the longer it’s on. Guessing because of the increased coolant pressure.
May 28, 2018 | 12:58 PM
#13
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From: Frazier Park, CA
Ok so just to sum up, pretty sure found the issue. Pressure tested the radiator and had coolant flowing out of one of the egr ports in the exhaust. Figured head got cracked somehow and the coolant passage was leaking into the egr passage. Pulled head and it looked fine. Investigation continued. Pulled the back egr plate off and had a nice little wet line going from the coolant cavity to the egr hole. I forgot the sealant there. 99% sure this is the issue but replacing hg with a genuine Toyota one anyway. Resealing the egr plate as well. Should have it back together later today or tomorrow after work and we’ll see. Really appreciate everyone’s help and hope this helps someone in the future with the same issue.
May 28, 2018 | 03:39 PM
#14
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From: Mogadore, Ohio
Toyota oem gasket for that rear egr plate is the best, and DNJ makes a good copy. It's one of those thick, composite metal gaskets, like the exhaust manifold one. Clean and seal it up good with rtv if you want to, but that gasket will give the best seal possible. Glad you found the problem!
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