William Rekow
Newbie
I tried a search for EGR valve test, and didn't turn up any decent results.
If I intended to test the EGR valve beyond just being able to pull vacuum on it in an engine off condition, what else would I look for?
It seems that it holds vacuum until even the slightest bump on the starter. It loses 4lb every bump, or goes rapidly to zero during cranking.
I have a freshly rebuilt engine, and I am chasing gremlins in all the electronic controls right now. I have to say I am less than impressed with some of GM's design choices (like the valve covers that can't be removed from an engine in running trim) and the inadequacy of the Haynes manual. Just for reference, the company I work for has a whole fleet of GMT400s.
If I intended to test the EGR valve beyond just being able to pull vacuum on it in an engine off condition, what else would I look for?
It seems that it holds vacuum until even the slightest bump on the starter. It loses 4lb every bump, or goes rapidly to zero during cranking.
I have a freshly rebuilt engine, and I am chasing gremlins in all the electronic controls right now. I have to say I am less than impressed with some of GM's design choices (like the valve covers that can't be removed from an engine in running trim) and the inadequacy of the Haynes manual. Just for reference, the company I work for has a whole fleet of GMT400s.
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