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Old 11-05-2007, 07:52 AM
Thats Mr. Oil Leak.....

 

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Cold weather start up?

Question for the techies..

Would cold weather start up be a good "test" for checking for low compression?
I know the glow plugs help in cold weather start up but even so if you have low compression the colder weather would cause for a longer start up if you had low compression right?

seeing how you have the glow plugs heat the air to aid in startup if you were to not wait for the glow plugs to warm up and just use compression to heat the air/fuel in cold weather do you think that would be a suitable test for compression check?
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Old 11-05-2007, 07:56 AM
Desert Shield/Storm Vet

 

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I know Im not a tech and it sounds plausible, but usually when you do a compression check you want the engine warmed up.
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Old 11-05-2007, 08:01 AM
Thats Mr. Oil Leak.....

 

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Yeah I agree with ya on that. I'm just curious what some will think. I do not have a compression tester that will read high enough and if this is some what of a decent way to look at it (ie easy starting when cold) if I should even worry about buying a tester and adapter to test compression.

I know my truck has never missed a beat starting, even in cold weather (20's which is cold for texas )
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Old 11-05-2007, 08:07 AM
Desert Shield/Storm Vet

 

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Yeah thats a good question and I will be interested to see what everyone has to say about it. Generally I wouldn't be concerned about performing a compression or leak down test unless it was running rough and you ruled out some other things first. Although doing the test and the leak down can tell you if you have any internals going bad.
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Old 11-05-2007, 08:18 AM
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You can do that, how ever you will cause premature damage to the engine. From the extended length of cranking while attempting to fire up the engine. Don't forget in cold weather batteries loose more energy quicker so that extended time of cranking will damage the batteries too.

Also how will this tell you what cylinder has low compression. I don't see how it would really work.
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Old 11-05-2007, 08:19 AM
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20's aint even cold John try 0 or below but yeah that could be a plausible idea
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Old 11-05-2007, 03:11 PM
Thats Mr. Oil Leak.....

 

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Quote:
Originally Posted by bigcountrysg View Post
You can do that, how ever you will cause premature damage to the engine. From the extended length of cranking while attempting to fire up the engine. Don't forget in cold weather batteries loose more energy quicker so that extended time of cranking will damage the batteries too.

Also how will this tell you what cylinder has low compression. I don't see how it would really work.
I could see causing damage if you have prolonged cranking but mine will fire just as well cold as it does hot.

And I know it won't pin point a specific cylinder. Just curious to see wht people think.
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Old 11-05-2007, 03:13 PM
Thats Mr. Oil Leak.....

 

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Quote:
Originally Posted by quadracer1014 View Post
20's aint even cold John try 0 or below but yeah that could be a plausible idea
I know I know.... that's why I said it was cold for Texas...... hahaha
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Old 11-05-2007, 06:05 PM
Thats Mr. Oil Leak.....

 

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