Ultimatedsm
15+ Year Contributor
- 823
- 27
- Apr 20, 2005
-
Scarborough,
Ontario_Canada
Hey guys I have a 90 motor in a 1995. Anyway everytime I rev my car past idle my car makes a loud tapping noise. The tapping goes away at idle. Anyway I popped my hood and reved it again to see where it is coming from. First I checked the timing belt area and no it wasn't coming from there. I check right over the valve cover, its a different kind if light tapping noise. However when I put my ear right over the injector/intake manifold area I can hear it get louder when I rev it. I also noticed on my boost gauge once in the while the tapping gets really loud than goes to a lighter tapping nose, when this happens my vacuum goes from 18 HG to like 14 HG than goes back to 18 HG again. So right now I have no clue why its doing this, could it be a leaky injector? I don't know, any idea guys?
450cc injectors (Original 10 years old)
walbro 255
3 inch exhaust
HKS megaflow intake
DSMLINK
450cc injectors (Original 10 years old)
walbro 255
3 inch exhaust
HKS megaflow intake
DSMLINK