Problems with boost gauge HELP!
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Problems with boost gauge HELP!
I can not get my boost gauge to work, its an autometer 3404. the gauge is plumbed into the back of my intake elbowwith a brass fitting. if i crank the car up i have vaccum on the hose going to the gauge at idle, and if i blow into the back of the gauge it reeds boost. i cant think of another reason it wouldnt be reading any ideas? heres the gauge i have:
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im not that stupid, lol, im saying if it pulls vaccum at idle it should obvioussly read boost under a load, ive foot braked the car under load and put it on the trans brake and it still doesnt read when a load is applied, nor when im going down the track
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no, i have a single plane intake with eldebrock elbow, the back has a 90* brass fitting in it to go to the gauge, i dont think the hose is getting kinked due to it having plenty of vaccum on it at idle. i have the FPR referenced on the other side of the elbow the same way and it reads boost fine.
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Maybe you can disconnect the brass fitting at the manifold and carefully blow air into the line to test it with an air compressor blow tip. I'd shut off the compressor and let most of the air out first to make sure you don't put too much air into the guage.
If the turbo is making boost and the car pulls hard, isolate the guage and test it.
If the turbo is making boost and the car pulls hard, isolate the guage and test it.
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I'm having the exact same problem with an autometer Z series boost gauge...shows vaccuum readings but even when the car is clearly into boost it doesn't register. I have mine referenced to the intake mani behind the throttle body.
#14