hehehe, well I have to triple check everything

That is the best way

Fuel pump is sat at the back of my mind.

I'm looking at cheapest first .

I really think mine would be benefit from a nice long mway run.

Got a few more things to check out and the leak test still needs doing .

Its been sat in traffic for months.

Cossie is the lcr fuel pump housing the same as vrs?diameter, housing length etc...? Did you just swap them over or did you disassemble the housings to exchange fuel pumps?

Cossie is the lcr fuel pump housing the same as vrs?diameter, housing length etc...? Did you just swap them over or did you disassemble the housings to exchange fuel pumps?

The pierburg assembly is a totally different style, so I just fitted the rubber tank seal and fitted the unit as it came out of the box (much better design imo than the vdo system as there are no hoses stopping it going in nicely).

But dimensions of the housing are the same? I also have ordered pierburg pump. Does it sits at the bottom of the tank or is it hanging in the air? The reason I`m asking is because according to web information the pump is shorter that vrs one...

But dimensions of the housing are the same? I also have ordered pierburg pump. Does it sits at the bottom of the tank or is it hanging in the air? The reason I`m asking is because according to web information the pump is shorter that vrs one...

Yes it fits fine, mine is sat on the bottom of the tank.

Thanks Cossie

No probs

Just to update this, my car had no engine / boost / misfire / fueling issue's all day on track on Saturday.

So I think I have FINALLY got to the bottom of my problem

I will now fit the LCR injectors and the 3bar fpr (but will prob replace it with a new 3bar fpr to play safe).

:clap: :clap: :clap:

I can`t wait my pump anymore to come

No news is good news, in this case it's bad ......

Been meaning to update for a week or two, but fed up of thinking about this poxy car !!

I took a trip too York to visit family, so decided to drive over to Leeds to RStuning for the rolling road as there's no-one down here who's any good or has a rolling road.

Did the rolling which showed massive timing, especially on Cyl#4

Couldn't tell me why though, it was better after the plug change but it's still doing it. I notice now on cyl#4 I'm getting up to 6 even when gently accelerating and even when blipping the throttle whilst stationary.

I've added an edited file to show a few types of driving showing the timing pull. I've not had time to sort all the various logs I've gotLOG-01-001-002-020edited.csv

Plugs were borked, apparently due to knocking engine

Not really sure what it all means or whats causing the pull.

One theory is that the high oil use is linked in as much that the cylinders are pulling in oil which is lowering the octane overall as the Paul first said it was crap fuel, it was running Vpower at the time !!

So still no cigar, I'm stumped so is Paul !!

Result=inconclusive ....

Funny that the plugs don't look oily at all if it was caused by oil in cylinder. :wonder:

Seems a tricky one.

Are the plugs in order in that pic, is the 3rd one different or does it just look like that in the pic?

Edited 24 April, 201313 yr by michael1

Ok your plugs are sheyte, i've never been a fan of bosch plugs.

I take it the plugs have been removed after a bit of low throttle crusing, as there showing signs of being lean. No.3 (in the picture) looks like it has been hotter than the others though and poss seen some det, hence it being whiter around the outside edge where the carbon has been blown off the plug.

Chuck a set of NGK's in there.

As for oil usage when mine was playing up, it started to use some oil, but since the issue has been sorted out, it's not used any, it's probably due to the fact that the car is pulling well, and then when it splutters / misfires the pcv will open and close when it wouldn't normally and thus the oil / vapour goes through the engine when it normally wouldn't.

As for the issue itself, it seems your fueling is spot on, and then it starts to add fuel (on the dyno run), and it says ok too much and leans back out to where it should be again, and then runs rich at the top end.

That is pretty much a carbon copy of what mine was doing, the ecu was deciding the car was running lean, and then forcing in more fuel (by closing the throttle), making the car run rich.

Cossie, how did you fix yours in the end?

Plugs were pulled after the trip from York to Leeds, yes very gentle run of about 30 miles, NGK's OE ones now fitted. You're right number 3 was the worst and yet 4 pulls lots of timing.

So what causes the fuelling to do that then ?? Aside from the fuel pump could the FPR be on the blink ??

Does timing get pulled due to fueling issues ??

Cossie, how did you fix yours in the end?

LCR fuel pump, and LCR injectors (I had previously tried a 4bar fpr on stock pump, but the issue was no better, once the LCR pump was fitted the problem vanished when using the 4bar fpr but remained when using 3bar fpr, so I then fitted the LCR injectors and used the 3bar fpr).

Plugs were pulled after the trip from York to Leeds, yes very gentle run of about 30 miles, NGK's OE ones now fitted. You're right number 3 was the worst and yet 4 pulls lots of timing.

So what causes the fuelling to do that then ?? Aside from the fuel pump could the FPR be on the blink ??

Does timing get pulled due to fueling issues ??

Yes I was getting a fair amount of timing being pulled too (upto 6 is acceptable so i'm told), but yes if the ecu detects knock (which can be caused my many things, fueling and timing are just 2 of the possible causes), the ecu will pull timing, add fuel, drop boost, close throttle etc etc as it sees fit, and once it's happy that it has combatted the issue it will slowly revert back to full power as it were.

The main things to look at with the fueling will be the pump, injectors and fpr.

Start with the easiest first and borrow a 4bar reg from someone (if I wasn't using mine on my other vrs still, i'd send it you to try) and see if anything changes.

LCR fuel pump, and LCR injectors (I had previously tried a 4bar fpr on stock pump, but the issue was no better, once the LCR pump was fitted the problem vanished when using the 4bar fpr but remained when using 3bar fpr, so I then fitted the LCR injectors and used the 3bar fpr).

So it was most likely just your fuel pump? The injectors were just additional. because of the uprated fuel pump? Any ideas what the issue was running the LCR fuel pump with the 3 Bar FPR?

Should a 4Bar FPR run fine on a relatively mild map (212BHP 330NM)?

Mine is pulling the timing also. Just having a think of what it could be, can't get it out for a proper logging run because I am supposed to be studying

Edited 24 April, 201313 yr by michael1

So it was most likely just your fuel pump? The injectors were just additional. because of the uprated fuel pump? Any ideas what the issue was running the LCR fuel pump with the 3 Bar FPR?

Should a 4Bar FPR run fine on a relatively mild map (212BHP 330NM)?

Mine is pulling the timing also. Just having a think of what it could be, can't get it out for a proper logging run because I am supposed to be studying

No the fuel pump on it's own didn't cure the problem, which means it was more than likely a combination of the fuel pump and the injectors both struggling to keep up with the demand on them.

If it was fuel pump only, then I wouldn't have needed to try the 4bar fpr with the LCR pump.

David you can test fpr to see if it`s function normally, pull off the small hose connected to fpr and if fuel starts to exit from the fpr it`s fubar. Wait at least 2-3min while engine idles.

AARRRRGGGGGHHHHHHHHHH

There I got that out of the way ....

So far since Thursday I have changed The FPR, swapped injectors around to see if the timing pull moved around with them, and I've just swapped the fuel pump and guess what ....

It's still farked.

Compression check tomorrow hopefully !!!

AARRRRGGGGGHHHHHHHHHH

There I got that out of the way ....

So far since Thursday I have changed The FPR, swapped injectors around to see if the timing pull moved around with them, and I've just swapped the fuel pump and guess what ....

It's still farked.

Compression check tomorrow hopefully !!!

This will make you feel better.

Tonight I removed the custom remap off my road vrs, as I didn't like the way the car drove as it was mapped to not use the N75 and use the AVCR instead, this made it very juddery on part throttle as the avcr wanted to give boost but the ecu didn't want it and would slam the throttle shut. On WOT it would be very smooth and progressive and just felt like nothing was happening.

Sooooo I flashed on the unknown map I was using on the track vrs when I started getting issue's.

And guess what.....

Around 6000rpm in 3rd and 4th I am getting the throttle closing and boost starting to drop with this car now lol (although it is must less severe and no misfire).

LOL

So it's deja vu !!!

LOL

So it's deja vu !!!

yeh seems that way lol

I have to wait 30 days for my injectors, they are out of stock

I have finally managed to sort out fuel starvation when using in tank walbro pump. Ordered from ebay the biggest sock available, little bigger then the housing. It was a pita do get it in but with a little help from wd-40 she slide in, also the big/main hole at the bottom of the housing from which pump sucks fuel must be plugged and two smaller holes must be drilled on the bottom of the housing to prevent swirl pot draining to fast. This prevents fuel starvation when cornering.

Have you tried a different Ecu? It may well be bugged.. just food for thought

I had a p28 Honda ecu that would lean out my high comp 2.3 which caused

horrible pre det, I tried everythin, so I borrowed a mate's ecu with Neptune and stuck my own basemap on and everything was ok after.