Lots of blue smoke please help!

[keeperofgoal]

I did a compression test today because I've been slowly losing coolant. numbers were around 175 except for cylinder 3 did 160 and cylinder 4 did 150 (I know I need a new engine soon). I followed the service manual and put a bit of oil down the spark plug hole for cylinder 4 and tried to re test and after that got no reading on any cylinder. I put everything back together and started it and now I have large thick clouds of blueish smoke coming from the exhaust. I'm guessing this has to do with me putting oil down the spark plug hole but how the hell do I fix it now? will it just burn off I just let it run? any help is appreciated thank you!

 

[Bad Luck]

I did a compression test today because I've been slowly losing coolant. numbers were around 175 except for cylinder 3 did 160 and cylinder 4 did 150 (I know I need a new engine soon). I followed the service manual and put a bit of oil down the spark plug hole for cylinder 4 and tried to re test and after that got no reading on any cylinder. I put everything back together and started it and now I have large thick clouds of blueish smoke coming from the exhaust. I'm guessing this has to do with me putting oil down the spark plug hole but how the hell do I fix it now? will it just burn off I just let it run? any help is appreciated thank you!

Assuming you didn’t mess anything up it will burn off soon. Just give her the beans!

 

[HiluxSurf SSR-G]

in general, blue smoke means it's burning oil, so the piston rings may be need replacement if the blue smoke doesn't go away

 

[DW_CT9A]

Yep. Blue smoke = oil

You said you put oil in cyl 4...now it's just burning it off, as someone else already suggested. It will stop once it all burns off, assuming it wasn't producing blue smoke prior. Don't worry about it.

As for your tester no longer getting any readings on any cylinders after adding oil, perhaps while cranking some oil got into the orifice on the fitting. This might happen if excessive oil was added.

 

[keeperofgoal]

Assuming you didn’t mess anything up it will burn off soon. Just give her the beans!

thanks for the the replies boys I did just this and all is good! I feel dumb for starting this thread

 

[octanejunkie]

thanks for the the replies boys I did just this and all is good! I feel dumb for starting this thread

How much oil did you pour in?

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[gamefreakgc]

I did a compression test today because I've been slowly losing coolant. numbers were around 175 except for cylinder 3 did 160 and cylinder 4 did 150 (I know I need a new engine soon). I followed the service manual and put a bit of oil down the spark plug hole for cylinder 4 and tried to re test and after that got no reading on any cylinder. I put everything back together and started it and now I have large thick clouds of blueish smoke coming from the exhaust. I'm guessing this has to do with me putting oil down the spark plug hole but how the hell do I fix it now? will it just burn off I just let it run? any help is appreciated thank you!

150 PSI vs a max of 175 isn't bad by any means. I drove my engine for several years with 90 PSI in cylinder 6. Once it dropped to 60 though it was starting to stumble pretty bad. I'd say your engine still has plenty of life. The FSM does say anything less than 10% of the highest reading is out of spec (so below 158.5 PSI) but in the real world, those number aren't bad.

A brand new engine with oil added will hit numbers in the 210-220 PSI range for reference.

 

[keeperofgoal]

How much oil did you pour in?

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about a 1/4 of a cup which is clearly way too much!

150 PSI vs a max of 175 isn't bad by any means. I drove my engine for several years with 90 PSI in cylinder 6. Once it dropped to 60 though it was starting to stumble pretty bad. I'd say your engine still has plenty of life. The FSM does say anything less than 10% of the highest reading is out of spec (so below 158.5 PSI) but in the real world, those number aren't bad.

A brand new engine with oil added will hit numbers in the 210-220 PSI range for reference.

yeah the truck runs great and I've never had any issues. a slow bit of coolant loss and the white smoke is what made me do the test in the first place. I never have trouble starting or idling and I'm not overheating at all. Is there any chance my lower intake manifold gasket is leaking and this is not a head problem? my oil does look clean though.

 

[octanejunkie]

about a 1/4 of a cup which is clearly way too much!







yeah the truck runs great and I've never had any issues. a slow bit of coolant loss and the white smoke is what made me do the test in the first place. I never have trouble starting or idling and I'm not overheating at all. Is there any chance my lower intake manifold gasket is leaking and this is not a head problem? my oil does look clean though.

Yeah, a quarter cup is quite a bit lol. Usually a couple of teaspoons is all that's required for a compression test

The nice thing about the pink/toyota red coolant is that it leaves an almost pink or white residue when it leaks. Check your hose connections to see if you have a slow leak somewhere to attribute the coolant loss to.

There are multiple ways to determine whether you're getting cross-contamination between fluids beyond just the color and exhaust smoke but that's usually a good barometer in and of itself.

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[Bad Luck]

about a 1/4 of a cup which is clearly way too much!



yeah the truck runs great and I've never had any issues. a slow bit of coolant loss and the white smoke is what made me do the test in the first place. I never have trouble starting or idling and I'm not overheating at all. Is there any chance my lower intake manifold gasket is leaking and this is not a head problem? my oil does look clean though.

I’m honestly surprised you didn’t hydrolock the engine with that much oil in the cylinder. A teaspoon of oil, crank the engine over a few times with no spark plug or anything else threaded into the spark plug hole, then do your test.

The lower intake manifold is a popular place for coolant to leak especially as these engines get up there in years and mileage.

 

[19963.4lsr5]

You won’t know if one of the crossover ports in the intake are leaking unless it’s really bad. A slow will fill up the void under the intake and evaporate without ever seeing it. You may spell it though.


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[cl4Rk]

I’m honestly surprised you didn’t hydrolock the engine with that much oil in the cylinder.

It’s reassuring how forgiving and tough these engines are…

 

[keeperofgoal]

I’m honestly surprised you didn’t hydrolock the engine with that much oil in the cylinder. A teaspoon of oil, crank the engine over a few times with no spark plug or anything else threaded into the spark plug hole, then do your test.

The lower intake manifold is a popular place for coolant to leak especially as these engines get up there in years and mileage.

haha yeah as soon as I cranked er I knew I messed something up. pulled the plug and cranked again and the oil came flying out. scared that I broke something I put everything back together quick and thankfully it started right up. its never easy to break a Toyota and thats one of the reasons why we love em.