how do i know if my injectors are going bad?

my car has a bad hesitation at higher rpm (above approximatly 4k)

Any way to check those? I changed my spark plugs, wires, fuel filter.

thanks a lot

puma

 

Only way I know of is to send them to RC Engineering. $28 per injector to have them cleaned and bench tested. They'll include a flow table, but they'll toss the o-rings.

 

anyone know if this could be the reason of my hesitation?

 

Did you check you A/F mixture?

 

Well here is the problem

MY DAMN!!! Autometer A/F meter vary with the voltage of the system.

Here it is: I have the HKS turbo timer type 1, in that little box, there is a volt meter that gives the voltage of the system. The voltage vary between 13,4 and 14,2 V.

When my sytem is at 14 or over, everything is fine, i am running rich when i should. As soon as the voltage drops under 14, i am no longer rich, it stays in the red even at WOT. It is worst the lower i get.

I don't know if my A/F meter is broken or what but let say that for the moment it is just a great light that looks cool on my A-pillar.

If anyone has a clue on how to solve that...

puma

 

Have you tried just connecting the O2 sensor straight to a voltimeter?

 

hmm no, i guess i should try that hum?

thanks a lot, i will try it.

puma