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09-18-2013, 11:03 PM | #1 | |
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Lower intake manifold gasket
My 2002 Blazer has 198,000 miles with unexplained coolant loss, rough idle and lifter noise at start up. Can I assume that I need to do the lower intake manifold gasket or are there other things that I should look at to confirm that this needs to be done?
Thanks,
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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09-19-2013, 08:28 AM | #2 | ||
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Re: Lower intake manifold gasket
Quote:
Is the oil milk or pink colored or overfull. I always add coolant leak dye to coolant and check oil for dye in it.
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09-19-2013, 11:12 AM | #3 | |
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Re: Lower intake manifold gasket
So that failure only causes internal coolant loss to the crankcase and not coolant loss to the exterior of the engine?
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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09-19-2013, 04:23 PM | #4 | ||
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Re: Lower intake manifold gasket
Quote:
The intake gasket can leak internal or out the top and front corners and rear corners of engine. Pressure test and see if you can see any leakage?
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05-13-2016, 06:45 PM | #5 | |
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Re: Lower intake manifold gasket
I now definitely have coolant in the oil and normal compression in all cylinders so my conclusion is that the intake manifold gaskets needs to be replaced. I see a few options:
Fel Pro Perma Dry Plus (MS98002T), AC Delco redesign (89017866), Victor Reiz (M1S161668). Which do you suggest?
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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05-14-2016, 08:33 AM | #6 | ||
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Re: Lower intake manifold gasket
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How many mile since 2013? Sure did take a long time to show up.
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05-14-2016, 11:29 AM | #7 | |
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Re: Lower intake manifold gasket
The truck was pretty much retired for a couple of years. I just started looking at it again to see what I need to get back in service. A few years ago I used to smell coolant in the truck and around the engine compartment occasionally. Now I see an increase in oil level from the coolant. Which gasket set will last the longest?
Thanks
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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05-14-2016, 02:18 PM | #8 | ||
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Re: Lower intake manifold gasket
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05-14-2016, 03:09 PM | #9 | |
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Re: Lower intake manifold gasket
If your smelling it inside might check heater core also.
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05-14-2016, 08:15 PM | #10 | |
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Re: Lower intake manifold gasket
I bypassed the heater core early on but that did not solve the problem. When I am done with the intake manifold gaskets I am going to pressure test the heater core to see if I can put it back online.
Fel Pro it is. Thanks.
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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05-17-2016, 09:10 AM | #11 | |
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Re: Lower intake manifold gasket
Here is what i have assembled for the job. Am i missing anything?
Fel Pro gasket set Fuel rail o rings Permatex ultra black rtv Inch pound torque wrench Ft pound torque wrench Gasket scraper Acetone Razor blades Coolant Oil Thanks
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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05-17-2016, 06:35 PM | #12 | |
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Re: Lower intake manifold gasket
It may be worthwhile to locate a local source for metal-bearing epoxy filler. Once the intake is removed, gaskets are scraped away, and the heads' intake flanges are cleaned off there is an even chance that you may find some pitting around the coolant openings at the ends of the heads. If so, aggressive wire brushing, cleaning with lacquer thinner/acetone or other solvent, then mixing and applying epoxy to the pitted areas may be the only way to get a good reliable seal. Of course, the areas filled with epoxy need to be scraped and/or filed flat before assembly, but trusting a sealant like RTV to fill any pitting is a crap-shoot.
If you need epoxy filler once you get into the task, at least you'll know where to get it. If you don't need it, it won't be any great loss to at least be prepared with a source.
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05-17-2016, 07:55 PM | #13 | |
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Re: Lower intake manifold gasket
Off shooting on Blues post I once was tasked with fixing a leaking water pump on a 78 Dodge Aspen. Once I pulled the pump off I found why it was leaking. There was a casting fault in the block and a large chunk was literally missing behind the pump.
I informed the owner of the situation and told him I could try and epoxy, but not guarantee it would work. Long story short, I worked the epoxy into the hole, let it set, sanded it flat and the water pump sealed and didn't leak any more. If epoxy can fix that, then it can correct pitting in the LIM.
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05-17-2016, 09:47 PM | #14 | |
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Re: Lower intake manifold gasket
I have an aluminum metal filler paste/hardener on hand that I used on a Toyota head years ago that worked very well. I'll make sure that its still good.
Thanks.
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2002 Blazer, 4 dr, 2wd, 199K miles 2003 Rav4, 4 cyl, 239K miles 2012 Mailibu, 4 cyl, LTZ, 85K miles |
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05-18-2016, 07:09 AM | #15 | |
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Re: Lower intake manifold gasket
It sounds as if you are prepared to tackle this. Unless you find a cracked casting you should have it under control
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