Major fluctuation with needle on Boost guage
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Major fluctuation with needle on Boost guage
I have been out trying to diagnos a irregular boost pattern on my FD and I purchased a KD Tools brand boost and vacuum gauge. At idle the needle gives me a perfect reading (nice and steady).
When I perform the boost test at WOT in 3rd gear, the needle really bounces around. I cannot seem to get an accurate reading as it bounces furiously from 7 - 11 at 3000 rpm and the same at 4500 rpm.
Is this normal? Or is something else causing this?
I had the same reading before I replaced all the vacuum lines.
When I perform the boost test at WOT in 3rd gear, the needle really bounces around. I cannot seem to get an accurate reading as it bounces furiously from 7 - 11 at 3000 rpm and the same at 4500 rpm.
Is this normal? Or is something else causing this?
I had the same reading before I replaced all the vacuum lines.
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I just experienced the same problem after installing my boost guage (first mod!!!) the needle bounced around like crazy once I got on the throttle, the solution was as moconnor said I forgot to install the small bass restrictor pill due to the stupid japanese instructions once I spliced that into the line the guage read perfectly.
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Jeff20B
1st Generation Specific (1979-1985)
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09-16-18 07:16 PM