IndyL03

I want to install a fuel pressure gauge and need some options. I have a gauge that says its fr carbed motors but i think i can make it work on the l03 since the prssues dont get higher than 15 psi. Anyone's input would be appreciated.

main reason for this is that somtimes the car boggs down with wot. replaced CTS, IAC, fuel filter, EGR, Ignition control module, installed factory temp t-stat, and plugs /wires.

doesnt make sense why sometimes it delays response or ignors WOT when above ~10-15mph.

Trans seems good. fluid was changed last weekend and install pan with drain. fuild was about the same as what i put back in. its shifts are firm. magnet had about 1/16th inch of particulate on it- I have seeen WAY worse

Gas I use Shell and BP mainly, if cant find a good one I go with whoever doesnt have ethonal

UnderCover89TBI

iTrader: (25)

If you want to be able to see it while you are driving. You either have to have one setup in the car. or you can buy an inline fitting that goes onto your fuel line. where it connects from the frame to the engine in the engine bay. and run it up and set it on your cowl while you drive. I would not leave this permanently but to diagnose your problem should be okay. Thomas posted one up here a month ago or so in a thread. do a search for it.

IndyL03

I read through some similar posts and i ordered of ebay an adapter so i can see the pressure when i am loading up since that when i have intermittent problems. IDK if it the pump, regulator, TPS, or MAP.

I do have a small exhaust leak on divers side flange idk if that could be it either.

planning on hearders so not wanting to mess with it yet til i order 3inch y pipe.- another story

IndyL03

fuel pressure is a steady between 12-13psi at idle, off idle and WOT

xch3no2

Fuel pressure tests will not reveal clogged injector screens.
Something to check.

IndyL03

ok how do I that? just remove the injector or is it part of the injector?

xch3no2

It would be best to first observe the injectors operation, (aided w/a timing light). Look for a fine mist spray, no streamers or dripping.

If visual inspection reveals poor spray cones the injectors can be accessed by removing the screws holding the top of the injector pod.

Poor spray cones may be caused by clogged screens or if the injectors themselves become obstructed.

IndyL03

well the spray pattern looks fine to me spary conical and you cant see fine mist pulsating. checked map and it tested okay as well cant find anything on TPS and still looking for knock sys info.

UnderCover89TBI

iTrader: (25)

Clogged injectors sounds like my problem..sooo...I got a holley tbi and a bored out edelbrock manifold to remedy the situation.

IndyL03

well i changed the screens and that helps but still trying to figure out my knock counts