Clicking noise on start-up?

[Vette1993]

1986 Corvette. When I start it up in the morning, all runs well, but I have a clicking noise coming from over my shoulder on the right side of the car. this rapid clicking noise rises and falls with the RPM's of the engine, eventually disappearing after a couple of blocks. Could this be the fuel pump? Is this normal or is something on the way out? It does not affect the performance of the car at all.

 

[XFIRE82]

noise coming from over your shoulder, hmmmm , that is kinda hard to diagnose. If it was coming from under the hood, could be a valve lifter in the engine. Fuel pump should be in the tank and it would not do that. My uneducated guess would be that there may be a exhaust leak somewhere and on cold start up it could make a sound like that and as the pipes warm up they expand and the leak could kinda seal up and thus get quiet.

 

[VikingTrad3r]

is it related to wheel speed or engine rpm

 

[Vette1993]

I just read somewhere that the '87 Vettes were equipped with a redesigned fuel filter, sort of a secondary filter mounted just above the usual one, and that this is utilized to bleed off excess pressure, sort of a bypass, which eliminates the clicking noise of the earlier design, sort of like having air trapped in your plumbing, causing the pipes to bang. Noticed this noise is more prominent when I don't use the car for a few days.

 

[VikingTrad3r]

i have an 87. dont think i saw that.

 

[Vette1993]

Listen to this video