Chevrolet 350 Intake Manifold Gasket Diagnosis and Repair

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4 жыл бұрын

This video goes through the complete diagnosis and repair of a faulty intake manifold gasket on a Chevrolet 350 engine. The gasket failed on the valley side of the engine, causing oil consumption with additional symptoms. Multiple diagnostic tests of the failure are included, as well as repair of the fault and verification of the repair.

Пікірлер: 54

@Sean-ps8wg 2 жыл бұрын

Good job professor Blaine! I like how you revisited all the tests after the repair.

@garyhardee2720 2 жыл бұрын

Like the diagnosis process. Analytical and logical.

@buick1955 2 жыл бұрын

Excellent video. The paper on the exhaust and the pcv vacuum test were new to me . Thank you .

@SIUAutomotiveVideos 2 жыл бұрын

Thanks Captain. We try to use what we got around here.

@jacksonwhitaker2859 4 жыл бұрын

Excellent diagnosis and repair!

@davidryan573 3 жыл бұрын

Excellent video, very straight forward and educational.

@marqueschoeb625 4 жыл бұрын

Best video on this subject. Thanks !

@made_nupe 4 жыл бұрын

Amazing video! Thanks for the lesson!

@kennybean274 3 жыл бұрын

great video on this issue

@GazzasStuff 4 ай бұрын

Excellent video thanks. I've learnt a lot. That's definitely 2 gaskets as they won't print on each layer. I'm guessing a previous problem. Maybe vortec related. Cheers

@thomasgreen7517 3 жыл бұрын

Great video!

@SIUAutomotiveVideos 2 жыл бұрын

Thanks!

@thedobermangang3503 3 жыл бұрын

good video my brother

@SIUAutomotiveVideos 2 жыл бұрын

Appreciate it

@travisloggains9249 Жыл бұрын

Brilliant!

@tedtalour6414 Жыл бұрын

Great video thank you. Can an intake issue cause coolant to exit tail pipe, milk oil and radiator bubbling? I plan on changing my head gaskets but i just wonder if the intake could cause the same symptoms?

@maheralazzawi7814 Жыл бұрын

good job

@eecervantes83 3 жыл бұрын

Question. Can a bad gasket causing a vacuum leak . Cause timing to act erratically ( advance and retart ). Haven't found anything visible up top. Thing it might be the manifold gasket now. Symptoms are. No power in gear. Hard start. Fluctuating rpm. But sometimes revs and idles fine in park.

@venom17a 4 жыл бұрын

mine has milk shake both heads so I'm suspecting intake gaskets...would u agree? I can't tell in this vid if coolant got into valvetrain/heads. wouldn't it spread to them?

@donkeydiehard879 3 жыл бұрын

This is awesome if you have the tach/dwell/shorting machine. Otherwise, you could have found an intake leak of that size with propane/starting fluid. Just make sure you have a fire extinguisher near by. Personally never had it go south but always have an extinguisher just in case

@SIUAutomotiveVideos 2 жыл бұрын

The intake leak was in the valley. I would have had to flow propane into the crankcase to discover it that way. This is extremely dangerous and I would not recommend this test under any circumstances.

@christopherborden6203 Жыл бұрын

Will the manifold bolt break? Removing them?

@MrMasterman6969 10 ай бұрын

comprssion tester have a sniff great job

@turbodarealist4689 9 ай бұрын

Whats the part number on them elderbrock intake gasket??

@robertdelao9201 2 жыл бұрын

JUST HAD THE INTAKE MANIFOLD GASKET REPLACED WITH NO ISSUES STILL HAVING THE SAME PROBLEM WITH THE DUAL EXHAUST PAPER TEST. PLEASE ADVISE THANK YOU ROBERT

@SIUAutomotiveVideos 2 жыл бұрын

The paper test shows a misfire. Try a power balance test on the 4 cylinders of the affected bank. Once you discover which cyl is misfiring, check spark plugs, firing order, plug wires, then do a compression test. Compression test is usually last.

@davidwellman7080 3 ай бұрын

I know this is a old video. However, if someone installed new intake gaskets and put them upside down. Would that cause a vaccum leak. And can make the motor backfire through the carb?

@franciscocrcabrerar9028 5 ай бұрын

That set didn't come with china wall gasquets?

@daviddntait 3 жыл бұрын

Looks like he stacked 2 intake gaskets on each other? Seems like they knew this was an issue?

@SIUAutomotiveVideos 2 жыл бұрын

Just the one paper gasket that separated.

@anthonyk 4 жыл бұрын

can rod bearings go if they mix fluids, i had my intake gaskets done on my 99 tahoe and the engine seized up after 60 miles the mechanic told me he did an oil change 2 times so idk what happened but 2 days after i got it back from him the engine made a humming noise then after 60 miles it died

@layne7742 4 жыл бұрын

I mean if coolant(water) is mixing with your oil it’s gonna get cooked in your crankcase/cylinders/valve train so yeah after enough carbon and scoring to your bearings it’ll seize up, but 60 miles? Gotta be something else going on as well

@denniscarver7681 4 жыл бұрын

I think spun main bearing. Pull the motor and replace you will be time and money ahead.@@layne7742

@robertdelao9201 2 жыл бұрын

SIU :HAVE A 1980 C10 BIG 10 SILVERADO STOCK REBUILT 350 5.7 WITH A HEI DISTRIBUTOR HAVING ISSUES,JUST LIKE YOUR VIDEO. ON MY DUAL EXHAUST PAPER TEST. BANK 1 IS NOT SOUNDING AS SHOULD BE. DO U RECOMMEND, A COMPRESSION TEST? PLEASE ADVISE. THANK YOU ROBERT.

@SIUAutomotiveVideos 2 жыл бұрын

A power balance test will confirm a misfire. I would do that first. However, a compression test won't cost you anything and will let you know of any low cylinders.

@acharyajamesoermannspeaker6563 3 жыл бұрын

How much would such a repair cost in time and money?

@christopherpoucher483 10 күн бұрын

Back fire?

@armygreenfj3924 Жыл бұрын

Can a bad intake gasket also cause low coolant in the radiator and milky oil at the dipstick? I also notice my oil dipstick is now passed its max limit mark.

@Smoketownedc Жыл бұрын

Same thing just happened to me yesterday

@armygreenfj3924 Жыл бұрын

@@Smoketownedc me too lol. Im hoping its just the intake gasket and not a head gasket. It was recently rebuilt with only 1500 miles.

@armygreenfj3924 Жыл бұрын

@@Smoketownedc so your coolant is low and overfilled dipstick due to coolant?

@dorishanna584 3 жыл бұрын

Can an intake manifold leak influence a cylinder compression test?

@blaineheisner6599 3 жыл бұрын

Not directly An intake leak could burn an exhaust valve and that could influence compression

@qatar8376 3 жыл бұрын

سلام عليكم great

@jesuspena5366 2 жыл бұрын

Would this solve a , oil in the radiator problem?

@SIUAutomotiveVideos 2 жыл бұрын

Very unlikely.

@jessemendoza2991 29 күн бұрын

Did you ever figure out what that was? Have same issue.

@venezia7252 2 жыл бұрын

sure looks like 2 sets of intake gaskets were put on,

@coinzilla833 3 жыл бұрын

UR INTAKE IS MISSINGTHE TWO MIDDLE BOLTS WHERE THE GASKET SLIPPED

@SIUAutomotiveVideos 2 жыл бұрын

Vortec cylinder heads only have 4 intake manifold bolts per bank.

@nightstorm9128 2 жыл бұрын

How can a bad intake gasket cause oil consumption...makes no sense...

@SIUAutomotiveVideos 2 жыл бұрын

The intake port gasket was torn, allowing the oily vapors in the intake valley to be drawn up into the intake runner. The oil entering the combustion chamber fouled the spark plug and exited the cylinder through the exhaust port, then out through the exhaust system.