Discussion
Hi, MOH as been off the road now for 18 months engine rebuild completed but stuck with a major over fuelling problem, We have narrowed it down to the AFM, ECU or associated wiring if I dont get it sorted by the end of this summer I am afraid it will be 1 less wedge as my patience is gone. Can any one lend my a known good AFM of course I will cover all postage costs and some. Sorry to ask but as I say I am at the end of my tether with this now. Ian
Try not to let it get you Ian, i know the feeling when it feels one thing after another. Hopefully it is something simple like a faulty AFM.
Sounds like you have done alot of the big stuff like engine re-builds so it would be a shame to get rid and allow someone else to reap the benefit.
Hope it's a simple fix.
Cheers.
Sounds like you have done alot of the big stuff like engine re-builds so it would be a shame to get rid and allow someone else to reap the benefit.
Hope it's a simple fix.
Cheers.
Hi Ian,
I have a spare ECU and AFM That I can lend to you to help you find your fault.
May have to wait for the weekend for me to dig them out, and post, as don't work near a post office anymore.
I made a sticking just for this. see
http://www.pistonheads.com/xforums/topic.asp?h=0&a... finding spare's Kit.
chedder has one also.
I have a spare ECU and AFM That I can lend to you to help you find your fault.
May have to wait for the weekend for me to dig them out, and post, as don't work near a post office anymore.
I made a sticking just for this. see
http://www.pistonheads.com/xforums/topic.asp?h=0&a... finding spare's Kit.
chedder has one also.
pwd95 said:
Hi Ian, sorry to hear of your probs, only wish I could help in some way. Haven't got any bits spare or the real know how to have a go testing really.
Ian (Wedg1e) Richo is on the West coast of mid Wales so a fair treck from Cardiff.
Hmmm. Any closer to RAF Valley then? Will be down there too!Ian (Wedg1e) Richo is on the West coast of mid Wales so a fair treck from Cardiff.
I had a similar problem, went over all the usual causes and the last thing I did which eventually sorted it out was to reflow the circuit boards on the ECU, although it might have been a combination of things. Do you have a decent soldering iron handy? It takes about an hour to undo it, do both sides and do it up again.
If you borrow a replacement ECU to help diagnose, you'll need the matching AFM as they tend to go together.
If you borrow a replacement ECU to help diagnose, you'll need the matching AFM as they tend to go together.
Have to remember a lot of Wales is up for us..... 
Valley is oop norf by too far I think.
You could try mine but I have a hot wire. If by any chance you have a hot wire I can run it over?
I assume the throttle pot has been set? I wasn't getting a lot of over fueling but enough to cause issues.
Won't be back to see this thread until Thursday afternoon. Also I will hold hands up and say I will not be much use other than supplying spares.
Valley is oop norf by too far I think.
You could try mine but I have a hot wire. If by any chance you have a hot wire I can run it over?
I assume the throttle pot has been set? I wasn't getting a lot of over fueling but enough to cause issues.
Won't be back to see this thread until Thursday afternoon. Also I will hold hands up and say I will not be much use other than supplying spares.
Edited by jmorgan on Tuesday 7th July 07:46
Thanks guys as always you have come up trumps, MOH is a 350 flapper the symptoms are as follows.
Engine has had a rebuild now starts and ticks over nicely UNTIL we put the AFM in place at which point the running becomes extremely ruff and the garage gets filled with very smelly black smoke. My mate (time served mech of 20 + years) and the 3 others that work for him all agree that the AFM/ECU is the most likely problem hence the need for doner parts.
Leigh I would have the parts back to you with in a week as would only need a short time to use them.
Ian
Engine has had a rebuild now starts and ticks over nicely UNTIL we put the AFM in place at which point the running becomes extremely ruff and the garage gets filled with very smelly black smoke. My mate (time served mech of 20 + years) and the 3 others that work for him all agree that the AFM/ECU is the most likely problem hence the need for doner parts.
Leigh I would have the parts back to you with in a week as would only need a short time to use them.
Ian
adam quantrill said:
Ian,
when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
O.K A go at a better explanation,when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
With the AFM in place and connected electrically but the pipe to the plenum removed from it as long as we restricted the air flow to the plenum all is fine even able to rev engine to a degree but as soon as the afm/plenum pipe is reconnected she over fuels like a pig. Hope that is a little clearer. Ian
richo_i said:
adam quantrill said:
Ian,
when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
O.K A go at a better explanation,when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
With the AFM in place and connected electrically but the pipe to the plenum removed from it as long as we restricted the air flow to the plenum all is fine even able to rev engine to a degree but as soon as the afm/plenum pipe is reconnected she over fuels like a pig. Hope that is a little clearer. Ian
Have you replaced the fuel pressure regulator or measured the FP at the rail?
What are you going to do Ian
if we can't get her sorted soonpeaktorque said:
richo_i said:
adam quantrill said:
Ian,
when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
O.K A go at a better explanation,when you say "UNTIL we put the AFM in place", where is it when the engine is ticking over nicely?
With the AFM in place and connected electrically but the pipe to the plenum removed from it as long as we restricted the air flow to the plenum all is fine even able to rev engine to a degree but as soon as the afm/plenum pipe is reconnected she over fuels like a pig. Hope that is a little clearer. Ian
Have you replaced the fuel pressure regulator or measured the FP at the rail?
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