What does low vacuum reading mean
#1
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What does low vacuum reading mean
I have a new engine with about 4000 miles on it and my vacuum is 12 and when i let go of the gas it goes to 18 and i have a boost leak,but not sure if that is effect or not?
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Oh and it's all stock except full exhaust,i have a ecu,but i'm planning to do a compression test,befor i install the ecu. I hope it's not the engine it will be my fourth!
#5
it really depends on what rpm your car is idling at... i think at around 750-800 rpm a decent stock motor will have around 16. if your car is idling a little higher around 900 rpm, you likely see more vacuum, around 17-18 and if you're idling lower, you will see around 14-15. i always read about stock motors supposedly producing 18-19 but i think it's rare to get that much vacuum. i've asked two rotary shops and they both said a stock motor will likely only pull around 16 at normal idle speed.
#6
Re: What does low vacuum reading mean
Originally posted by SilverFlash
I have a new engine with about 4000 miles on it and my vacuum is 12 and when i let go of the gas it goes to 18 and i have a boost leak,but not sure if that is effect or not?
I have a new engine with about 4000 miles on it and my vacuum is 12 and when i let go of the gas it goes to 18 and i have a boost leak,but not sure if that is effect or not?
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