Your getting a steady 40 PSi when you flick the key and the fuel pump is on aren't you?

thewird

Swapping to 850 primaries was a big no-no. And then 1680 secondaries.
So far behind the current use of better injectors.
You did not do your homework.
Pull out those 850 and install IDs 725s or 1000s.

Since all went bad doing the injector swap, that proves the error area is just that.

@thewird naw when i turn the key on the pump primes but when it shuts off the fuel pressure drops to 0, im not sure if i stated that but i think i did =/ while the key still on the ON position

@cewrx7r1 yeah i did my homework got the 1680 with resistors i know they are low imp but hey its all i got =(, and do you think its better if id go 550/1680, cause im really just trying to hit anything in the 400-500 range, nothing more , and safely drive it to a good rotary tuner

But when the fuel pump is "priming" (which really just means its on), the fuel pressure is a steady 40 psi correct? If so then its working fine.

On a side note, you do know your 850 primaries are low impedance as well correct? Or did you use the stock 850's.

thewird

@thewird: when i turn the key ON fuel pressure guage reads 40 then drops to 0, i leave the key ON, it doesnt hold the constant pressure

sorry about the bold just it was weird and confusing typing that lol!

and yeah i used the stock 850 from the secondaries

Yes, that is normal. When you flick the key, the fuel pump comes on for 2-3 seconds then shuts off. When it is on, the fuel pressure is stable at 40 psi. That is what i ment.

thewird

Ill take you a video just incase

Tow the car over to my house and I will get it running for you.

Where are you near text me 7863463501

sounds like one of the primary injectors is not firing, bad wiring or bad injector clip. could be a stuck injector also. were the injectors serviced while they were out?

No they where not ima take them.out to see

I'm sub-500hp with a BW S366 with all bolt-ons, and I'm using Injector Dynamics 725 primaries and 2000 secondaries. With my VERY conservative tune, I'm still reaching high duty cycles.

UPDATE 11/3

ok i got the fuel pressure to stay at 40 and i clean and flushed the engine, the engine just doesnt want to start i even have the original 550cc primaries idk what to do anymore =(

Did you change the map to a 550cc one? Try the stock base map.

thewird

yup changed to the 550cc, and tomorrow ill try the stock base map, but its weird it all happened after fuel swap!

the plugs got cleaned they look new
deflooded procedure just incase
made sure fuel pump was good

I'm going to get flamed for this, but throw the apexi in the garbage. hahaha hate that thing.

your problem is in the map, go on your desktop and look closely at any basemap and compare it to the map you have in the apexi.(I assume you have datalogit?)

A friend had similar problem, make sure the map was uploaded properly.

Something I just realized. That BDC base map you posted is set to use the GM 3 bar map sensor. If your using the stock one, you would have to change it back.

thewird

and sometimes it's best to just save your $ and pay a shop to do the work.

put the 550's in, intialize the pfc and replace your spark plugs(i do not care if the old ones are sparking or not) and try to start the car. the 850's will flood a borderline engine, and i semi recall your engine being on its last legs.

Agreed ^

thewird

hey @rotaryevo , Ill give it a shot tomorrow if that doesnt work ima just take it to the shop and no I bought this.new engine lol it was half bridge ported

indio: im sure to load the map its , open it with fc edit and aftrr it loads up hit write all, also what ive noticed is the fc.commander doesnt go past the APEXI loading screen it.just stays herre anyone thinks.my ecu is fried, I should of went aem instead

LOL, blames ECU instead of realizing this is beyond his comprehension.

thewird

just forget it , ill fix this without your help,i already fixed the pump,always got act all kool
and make fun of the new guys. "thanks for the help rotaryevolution"

The answer to fix your problem is already in this thread and yet your blaming ECU's instead of just making your car work. You keep ignoring what people are telling you and doing your own thing.

thewird

Ive done what exactly all rotaryevo has told me and that helped me on figuring out the problem back to the pump, now be quite with your worthless remarks nothing you've said has done any good