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Good engines will have good compression regardless of temperature. Testing warm is more of a salesman gimmick to convince you to buy a weak engine. Especially in the case of a diesel engine good compression is most important when the engine is cold. Lower cranking speeds due to injectors in the...

Pipe tape is for tapered threads only. You should use the injector washer on the adapter to head. I can't tell what thread you have to mate your gauge to the adapter. It's bottomed out which should never be the case for a tapered thread.

Quality requires specification OR pedigree. Pedigree makes specification easy but can't be relied on forever. Apple engineers were very good at specification to get quality out of their Chinese made phones for example. With that said, we're working with aftermarket parts here. They don't have...

On the subject of glow plugs swelling, for the civy trucks most know not to run the Autolite plugs. They always swell. There are certainly design characteristics that do cause swelling. And don't go calling glow plugs low tech insignificant items. The materials required to make a reliable glow...

If you have a junk glow plug that failed and you keep replacing it with junk glow plugs and they keep failing have you ever considered that it may be the junk glow plugs that are the problem? If you don't want to buy a full set at least put a good plug (Delphi?) in that hole and see if the...