C4 Tech/Performance L98 Corvette and LT1 Corvette Technical Info, Internal Engine, External Engine

TPI noise

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Old Jun 4, 2008 | 12:15 AM
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Default TPI noise

Hello everyone, I have a 1987 corvette that has developed a clacking sound from the motor. I shut the motor off because I first thought that it was a bent push rod . I restarted the engine and tried to narrow down the sound and I noticed that it was coming from under the plenum area of the TPI. I shut the engine off to connect a fuel gauge and then tried to start the car. When I turned the key to run without starting the engine a loud clicking noise was heard and the fuel gauge went from 40 to 20 LBS. a few times and then stopped at 43 LBS and held at that pressure. I need your help with ideas on what the problem might be. thanks.
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Old Jun 4, 2008 | 12:39 AM
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Sounds like a bad injector.

Matthew
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Old Jun 4, 2008 | 01:18 AM
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Default TPI noise

I thought that it might be a broken injector. today I drove it and the noise was gone but it had a misfire. should I also check the regulator? thanks.
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Old Jun 4, 2008 | 01:23 AM
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If you are shopping for injectors you should consider ditching the stock multecs... you can update to Bosch III for not much more than the cost of getting a set cleaned, maybe less if you have to buy another injector from a parts store too. Theres been so much talk on here that you don't even need to use the search function to find a ton of threads.

http://fuelinjectorconnection.com/sh...&productId=134

Just wanted to point that out in case Jon doesn't pop in before you waste money somewhere LOL
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Old Jun 4, 2008 | 01:43 AM
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Default injectors

I've been on the fuelinjectionconnection web site quite often and they have the best prices for a set of injectors that I have seen anywhere. When I order new injectors that is where I will order them..
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Old Jun 4, 2008 | 12:21 PM
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Originally Posted by mdennymike
I thought that it might be a broken injector. today I drove it and the noise was gone but it had a misfire. should I also check the regulator? thanks.
I wouldn't think that it's the regulator. If you get it where the FP drops again, try tapping on the injectors with a screwdriver and see if it starts firing again - then you have found the bad one.

Matthew

BTW - FIC has a great reputation and prices. When I replace mine I'll be getting them there.
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