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Subject: block test

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lonestarjeff    Posted 08-14-2018 at 23:32:32 [URL] [DELETE]        [Reply] [Email]  
  • block test
  • Picked up a block tester yesterday to see if I can detect any evidence of a gasket leak into the coolant. I've run two tests so far(both negative)....one I ran on the cold engine this morning, the second time after getting back home on it while hot.

    The truck did not overheat today & I had not driven it since last week, so I guess I will try running the test after the next time it overheats on me. No idea how long the trace of exhaust is detectable in the coolant.

    Philny    Posted 08-21-2018 at 20:32:06 [URL] [DELETE]        [Reply] [Email]  
  • Re: block test
  • I canít remember if you said that you were loosing coolant ,that can be detected in the exhaust.my next question is the temperature gauge accurate?

    lonestarjeff    Posted 08-20-2018 at 19:41:34 [URL] [DELETE]        [Reply] [Email]  
  • update
  • Drove it today on a highway trip. The needle climbed a little 2 or 3 times, but it never really overheated. Around 90 degrees ambient at the time, probably 8 degrees cooler than the last time it overheated. I ran the A/C full blast.

    I tried the block test again anyway...it was negative. So, I'm still scratchin my head. Guess I'll drag the trailer back here from the farm next weekend, see what happens.

    I did look into doing a head gasket job myself, looks like fun :-(

    Bruce(OR)    Posted 08-16-2018 at 10:40:20 [URL] [DELETE]        [Reply] [No Email]  
  • Re: block test
  • If your not losing coolant, I don't think your block test will reveal anything. Another consideration is that your overheating is not until your under a load. If you have a stress crack, it might not open until under load again.
    So load it up and go warm it up. A good point for a stress crack can be found in the cylinder head between the valve seats. . .

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