My injectors make a really loud ticking noise. They are so loud it almost sounds like the valvetrain but I know its not, my valves are adjusted properly and its a hydrolic setup anyways. The injectors are bosch blue tops, 24 lb. My pressure is right at 50 psi too. I know the stock 19lb. injectors tick, but not like these do! Anybody have experience with these injectors? I guess it doesn't really matter that much other then the annoying sound, the car runs awesome so I can't complain too much. I tried lowering the pressure to see if the sound changes but it doesn't. The injector right next to the regulator is the loudest no question. Thanks!

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Mike C
88 Iroc 5spd
355 TPI, AFR 190s and lotsa other mods
86 Iroc in pieces!

 

I found the higher the fuel pressure, the louder the ticking.

 

i read a article in chp about them twin turboing a 3rd gen camaro and they were using 80 lb per hour injectors and they said it sounded like some one just turned on a loud sprinkler system!!haha!

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1989 firebird formula

Mods: converted from T.B.I. to a carburator 305 to a 350. Flowmater exhaust,hedman shortie hedders,202 heads,350 horse cam,bored.40 over, Edlebrock torker2 intake.

Future mods performer rpm air gap intake (polished) and 600 edlebrock carb, comp roller cam, and way better headsa 400 defintely in the works!

 

Mike, I run SVO 24lb injectors, and my ticking is loud also. You learn to live with it after a while.

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1989 IROC-Z 5.7L

 

It is actually the injectors ticking turning on/off or is it the fuel lines pulsating? My fuel lines pulsate and the rate varies with rpms? They make a ticking noise in the ****pit if the fuel line is touching the floorboard. You can grab the fuel rail or regulator and feel it. Under the hood I can hear the injectors though but not in the cab.

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Rob
High Performance & Party page
Pics of my rides past & present and recent party pics!

89 TTA #426 20th Anniversary turbo 3.8 bone stock
94 Silverado Tuned Port Injected
87 Grand National- lil' ole V6, highly modded
95 Trans Am Conv.- LT1

 

just for curiosity have any of you replaced your fuel pump(those with pulsating fuel rails? the newer pumps come with a hose instead of a pulsater (witch actually would dampen the pules from the pump. so asuming you have the higher fp may cause a noticable noise but, suposidly it is better this way less likely to leak by the fuel pump