White smoke on cold startup

Tiny
SNUFFI12345
  • MEMBER
  • 1991 MAZDA B2200
  • 2.2L
  • 4 CYL
  • 2WD
  • AUTOMATIC
  • 152,000 MILES
Hey guys,

Recently picked up the truck listed above used that is running really well, sadly I just noticed that on cold startups in the morning I get white smoke for about five minutes (gets thick when goosing the throttle). After that it thins out and goes clear.
No problems to report, unfortunately my temperature gauge is not currently working.
Did a radiator flush recently and the cooling system seems to be holding coolant so far. The level has dipped a tad but that could be leveling out.
The oil on the dipstick and just inside the valve cover shows no coolant intrusion.
The white smoke (standing in the immediate area) does have a sweet smell to it.
I've added a video to help out (video was shot about a minute into a cold start, everything cleared out about four minutes later).
A friend of mine mentioned the head gasket which was replaced several years back.
My personal diagnosis is that there may be a small crack or gap with the gasket that seals itself when the engine warms up.
I spoke to the previous owner who mentioned it could be the fuel mixture running rich then evening out as the engine warms, he had the fuel pump replaced before selling it.
Past that I have no other past knowledge to provide.
Thoughts? Other things to consider or look for?
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Friday, March 8th, 2019 AT 1:05 PM

3 Replies

Tiny
ASEMASTER6371
  • EXPERT
Good evening

It looks like you have a blown head gasket. Water is in the cylinders and that is what is burning off.

I would do a leak down test on all the cylinders to be sure it has failed. That is when you insert shop air into each cylinder one at a time and watch for movement in the radiator.

Roy
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Friday, March 8th, 2019 AT 5:30 PM
Tiny
SNUFFI12345
  • MEMBER
Thank you, I figured from what I've researched, I just like to make sure.
In all honesty this is my first time with this issue and I have a mechanic friend who is going to walk me through removing the head and an overall replacement (don't worry, I'm taking the head to a shop and getting it looked at and prepared).
I appreciate your assistance, thanks again!
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Friday, March 8th, 2019 AT 7:48 PM
Tiny
ASEMASTER6371
  • EXPERT
You are welcome.

Always glad to help.

Roy
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Saturday, March 9th, 2019 AT 3:56 AM

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