Tinkers Rides rb30 to delco

[vlad01]

Should be easy enough to check. The return line should stop after the pump is switched off, if it does, then the check valve is probably bad in the pump. Around 15-10 years ago, most EFI pumps I went through the check valves all went to shit in short order. I am sure it was from the poor fuel quality of the time, but it may have also been from pumps being just shit quality all round at the time which made them fickle with fuel quality and contamination. Now days I had not had any issues with the valves leaking whatsoever. I did an autopsy on my daily's pump a few days ago when I replaced it preventatively at 137K and the valve was still good.

[Tinker]

So , Very dissapointed with the ebay FPR . I clamped the return line and primed system ,fuel pressure held a 3bar for a long time ..... Think i will dig out the original one and see what she does. There is nothing to these things makes me wonder why it doesnt work?
I didnt pay much for it but the time i think i have wasted with it kills me.

Chinese knock offs .. Some things you can get away with and some you cant! Took a picture of the inside ..

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[antus]

Thats pretty conclusive that its leaking past the reg. I cant speak to the insides. But many years ago I had problems with a cheap one, and ended up going to a tuneing shop that diagnosed the reg and charged me for a genuine saard unit which cost a lot, and its been working since. I had forgotten that even happened. Other people have had luck with the clones. Like you say its risk and what's your time worth. These days I tend to go for the reseller companies that have cheaper brands but trusted brands none the less for fuel pumps and regs, over ebay for just this reason. Lately raceworks has been my go to brand. Not that I am a big shop or anything, just for my own car. So far so good with them on price and quality and via an australian online store.

[Vrv8hz]

I used the same type of ebay reg on my VL for a while and ended up machining up an aluminium block and mounting an oem bosch reg off a VR V6 instead. The ebay reg worked for a while but weren't consistent, the oem stuff works for decades.

[vlad01]

Yeah I stick to the OEM ones as well, Only has a few leak via the vac port, but most have lasted decades so far.

[Tinker]

So , I put the standard FPR on today, And my starts and overall running was a lot better. Problem is rb30 fuel pressure reg is only at 2bar so all other cals will be off. I will keep looking for a Good Brand name regulator . I am in no hurry ....

[Tinker]

Been going over things ive done found this table in 12p . Injector delay table and is mostly empty.... is this correct or do i have a issue?

table.jpg

[antus]

It looks stock in the BLCD and APNX 6 Cyl 12P bins from the 12P zip. My guess would be something to do with stall saver maybe? Not sure. Not in the V8 but is in the V6 tunes.

[vlad01]

Might be something to do with manifold fuel looking at that. So a chance for the manifold fuel to be drawn in before the transient/AE is allowed to do it's thing, so assuming that, both aren't piling up together causing a rich stumble. You could note the value to put it back to default later, and try zeroing it out and see if that affects anything when applying throttle off idle. If it does, that's probably what it was for.

[Tinker]

I picked up a new/second hand FPR for $100 . Looks good no leaks . Hopefully ill get some time soon to test .Made in Australia ... i Like that !!

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