LPG Discussion Forum

OK last call I think.

Just for peace of mind on my part, today I also swopped over the 'cut-leads' from cyl 5 to cyl, so they now match the injector 7 (which is of course feeding injector 5). There was no change in performance. TBH in my mind I should have done this anyway, it sounds more right in ...

64.9p/l @Morrisons, Wisbech, Cambs

Definately set on sequential.

My theory is that it sees the 1st impulse, and directs that out. Then follows through in sequence; directing the o/p to the next available port. If 2 are missing (ie 7/8 on a 6-cyl car) then it only routes those 6 out. You don't actually tell it via programming that it ...

Originally I had 1/2/3/4/5/6 connected with 7 (bank 1) and 8 (bank 2) disconnected. All I have done is make the feed to 5 a spare, and used 7 as the new feed to 5. All works ok and it calibrated in a remarkably quick time. Never actually had it as good since installation.

Well if you think the fault is ECU output no.5, swap the connector with some other injector on the same bank. The injection sequencing isn't desperately important.

I spent hours looking for a single cylinder hiccup that turned out to be a flap of rubber inside the relevant injection pipe.

All ...

Well if you think the fault is ECU output no.5, swap the connector with some other injector on the same bank. The injection sequencing isn't desperately important.

I spent hours looking for a single cylinder hiccup that turned out to be a flap of rubber inside the relevant injection pipe.

All ...

Suspect injectors - as I understand it, they are set at the factory using dial gauges (to adjust the height of the seat) randomly swapping parts from one set to another will never give good results.
Connect one of your 'good' injectors to cylinder 5 to eliminate the ecu/wiring.

I repeat again - I ...

Just to clear up confusion.

I have swopped coils of injectors over (ie stripped injectors down to do this).
I have swopped whole bank of injectors over.
Ihave swopped o/p pipes to nozzles over.
I have swopped spark plugs/leads/coils over.

The fault remains on cylinder 5

I have checked with ...

Further to originally writing the above, I have done a little more work. From someone else's suggestion, I have clamped in turn each of the injector o/p hoses to the brass nozzles. No.5 makes no difference thus once again pointing to a cyl 5 fault.
I have a USB oscilloscope, which I have used to ...

I have posted this info elsewhere with no response so far, so a little bit of cut & paste:

Rover 75 KV6 2.5 ‘Y’ plate

This car was diy converted a few years ago, and was checked over & certified by a reputable fitter. He commented at the time that it took a while to calibrate but eventually it ...