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Stock Boost Gauge Pic

mr_crust

By mr_crust,
in Engines & Forced Induction

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mr_crust Experienced

mr_crust

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Posted

hey guys,

i dont know if im havin issues or not, but when i boost it (9psi) it seems fine but when i back off on the accelerator the part where is goes below the +7 0 -7 it sits on about a -4 (this is in gear)

does that sound right ?? or is it meant to sit on the -7? can anyone take a pic of there car in gear and ideling so i can compare my one

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Ganador Enthusiast

Ganador

Posted
Posted
hey guys,

i dont know if im havin issues or not, but when i boost it (9psi) it seems fine but when i back off on the accelerator the part where is goes below the +7 0 -7 it sits on about a -4 (this is in gear)

does that sound right ?? or is it meant to sit on the -7? can anyone take a pic of there car in gear and ideling so i can compare my one

i know that on boost it would be above 0 and when you back of the throttle it goes into negative cause its creating vacume not boost but i always thought it would sit on 0 on idle.

mr_crust Experienced

mr_crust

Posted
  • Author
Posted

ok normally it idles clsoe ot the -7 but it has in the last 2 days moved to -4.

last time i had a cracked hose i had a similiar issue...i might change the hose to the boost sensor and see if it resolves the issue

thanks boys

RBFIRE Experienced

RBFIRE

Posted
Posted (edited)

Mr_crust,

i am very sure u have a vacum leak somewhere,

i experienced it.

b4 i installed my boost gauge.

First was fine, the needle sitting at near -7, about -6 to be precise, but couple of days, the needle start to climb to -5, and then -4, and eventually it sit near 0 when just idling. I noticed it and decided to check.

It turns out the hose that i connected to the T piece when installing boost gauge, it kinda split, so over time, that split geting bigger and bigger.

therefore i am pretty sure u have got a vacuum leak somewhere that caused the needle to sit closer to 0,

if all in good working order, it should be sit as close to -7 or -6.

I dont have pic rite now, but i can be sure that the stock boost gauge, at idle, the needle should be about 2mm-3mm next to the -7!

Edited by RBFIRE

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