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icccon
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Joined: Apr 12, 2012
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PostPosted: Tue Jun 19, 2012 12:50 pm Reply with quote Back to top

Quite a few years ago my coupe 16v developed a bit of a miss fire,which I managed to sort out no problem.. But then seemed very reluctant to start.... If it had been stood for a couple of days it would fire up instantly, but if say I went to work, did a 12 hour shift, or a short run,it would take a lot of cranking over before it would fire up...
I replaced every single part of the fuel system and ignition system, with no joy what so ever. Scoured hundreds of forums looking for answers, and didn't find anything that could help me out..
Turned out to be the most simple fix ever.... But do you know what it was...?
I,m quite sure I've still never seen this as the solution to this very common problem on any forum as yet...
So what do you think it was...?
This will either be fun for the different answers,or you all know already , and I'll look a dick...Lol
Very Happy
 
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Mikes2
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PostPosted: Tue Jun 19, 2012 5:51 pm Reply with quote Back to top

Give us a clue was it fuel or ignition related
 
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icccon
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PostPosted: Tue Jun 19, 2012 6:10 pm Reply with quote Back to top

No Smile. I'd almost given up on it, then picked an old school friends brains , who was a BTCC driver a couple of years back, but served his time at a ford dealers in early 80's .... It took him 2 seconds to diagnose the problem. Mr Martyn Bell of Barrow on Humber is a genius ....
 
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Mikes2
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PostPosted: Tue Jun 19, 2012 6:19 pm Reply with quote Back to top

The only thing that I think could possibly cause this is that someone hadn't removed the small filter in the metering head at PDI.

The feed banjo has a small screen filter from the factory and should get removed but was often missed
 
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icccon
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PostPosted: Tue Jun 19, 2012 6:29 pm Reply with quote Back to top

In fact . Yes it is to do with one of those. But very indirectly ! Fuel or ignition ..! And No it's not that Smile
 
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icccon
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PostPosted: Tue Jun 19, 2012 6:37 pm Reply with quote Back to top

Another clue is it was the Lambda that failed in the first place...
 
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daz-the-dogg
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PostPosted: Wed Jun 20, 2012 12:30 am Reply with quote Back to top

The ecu hadnt been cleared of codes when left for a couple of days it was ok but when warmed the new sensor/s was out of the ecu range

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icccon
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PostPosted: Wed Jun 20, 2012 8:38 am Reply with quote Back to top

No. Not that ... Smile
 
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dgacampbell
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PostPosted: Wed Jun 20, 2012 9:09 am Reply with quote Back to top

Mikes2 wrote:
The only thing that I think could possibly cause this is that someone hadn't removed the small filter in the metering head at PDI.

The feed banjo has a small screen filter from the factory and should get removed but was often missed


Mike do you by chance have a diagram or a picture of exactly where this is so that i may check my own car? Or could you point me in the direction of said diagram?
TIA
Dan.

(PS sorry for thread hijack lol) Laughing
 
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Mikes2
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PostPosted: Wed Jun 20, 2012 10:30 am Reply with quote Back to top

a fuse ?

Don't have a diagram.
 
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icccon
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PostPosted: Wed Jun 20, 2012 10:39 am Reply with quote Back to top

No, not a fuse . The problem would most definitely occur if you did a lot of small journeys !
 
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Mikes2
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PostPosted: Wed Jun 20, 2012 10:50 am Reply with quote Back to top

something getting clogged like a cat
 
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icccon
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PostPosted: Wed Jun 20, 2012 10:59 am Reply with quote Back to top

No, much simpler .
 
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dgacampbell
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PostPosted: Wed Jun 20, 2012 11:00 am Reply with quote Back to top

sooty plugs?
 
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icccon
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PostPosted: Wed Jun 20, 2012 11:09 am Reply with quote Back to top

No Smile
 
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icccon
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PostPosted: Wed Jun 20, 2012 11:10 am Reply with quote Back to top

If nobody's got it by tomorrow I'll tell you .....
 
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dgacampbell
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PostPosted: Wed Jun 20, 2012 11:24 am Reply with quote Back to top

clogged air filter?
 
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icccon
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PostPosted: Wed Jun 20, 2012 11:28 am Reply with quote Back to top

No Smile I said it was a tease Smile
 
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dgacampbell
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PostPosted: Wed Jun 20, 2012 11:32 am Reply with quote Back to top

A tease, that it is!
One hell of a head scratcher, take it i will kick myself tomorrow lol! Laughing
 
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icccon
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PostPosted: Wed Jun 20, 2012 11:41 am Reply with quote Back to top

I read lots of issues with warm or hot starting , this could be the answer to those . And it's not 5th injector or warm up regulator, rest fuel pressure or anything like that. ! Like I said very simple Smile
 
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IanW_home
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PostPosted: Wed Jun 20, 2012 12:41 pm Reply with quote Back to top

Reconnect the engine temperature sender?
 
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icccon
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PostPosted: Wed Jun 20, 2012 2:04 pm Reply with quote Back to top

No
 
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Mikes2
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PostPosted: Wed Jun 20, 2012 3:59 pm Reply with quote Back to top

Super unleaded fuel needed ?

My last stab in the dark
 
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Fast28
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PostPosted: Wed Jun 20, 2012 4:14 pm Reply with quote Back to top

So if the lambda failed then it could of been excesive carbon particles from the engine running overly rich or silicone contamination from a bodged DIY gasket. If the engine was running rich then there might be an unmetered air leak which could be anything attached to the inlet manifold not sealing; bearing in mind that fuel pressure was OK to start with. Fuel injector o-rings perished, seal on throttle body, exhaust downpipes loose effecting the lambda reading? Razz

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icccon
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PostPosted: Wed Jun 20, 2012 5:23 pm Reply with quote Back to top

Er No
 
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daz-the-dogg
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PostPosted: Wed Jun 20, 2012 11:29 pm Reply with quote Back to top

The new lambda wasnt plugged in????????

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icccon
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PostPosted: Thu Jun 21, 2012 8:26 am Reply with quote Back to top

Ok here goes .. Like I said earlier in this post, Martyn worked at a ford dealers, just a small one. They'd park the cars outside during business hours, then put them away each night...
This meant that they were never getting out of their cold start mode, so were over fueling.... Still with me.. ? Lol
The fuel has to go somewhere, and a lot of it ends up in the oil.....! The fuel in the oil can take a couple of days before it stops vaporizing , so while its doing this the vapours are working their way back up the engine, into the inlet manifold and essentially flooding it... Smile
So my oil was fairly new, but every time I started the car,it then started to vaporize the fuel in the oil again....
Solution ... A simple oil change.. Smile
 
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Fast28
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PostPosted: Thu Jun 21, 2012 10:35 am Reply with quote Back to top

It would seem a correct observation that the mixture in the cylinders was hard to ignite due to being too rich but excessive fuel vapour eminating from the oil? Confused must of been a hell of a lot of fuel being dumped into the cylinders during cold starts! I can maybe understand this with old carburetted Fords of the early eighties but not on a modern fuel injected car unless there was an underlying problem with leaking injectors.

Have you still got the car? did the problem return and necessitate another oil change?

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icccon
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PostPosted: Thu Jun 21, 2012 10:54 am Reply with quote Back to top

Yes still got it, and had no problem at all since , but when you think about it, it really does make sense...
And like I said before about reading all the hot/warm starting problems... Could this be the cause...? It's got to be up there I'd think...
 
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scotty33
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PostPosted: Thu Jun 21, 2012 11:22 am Reply with quote Back to top

You probably solved the cause when you changed injectors. The fuel accumulator stores petrol at pressure in k jet type systems. leaking injectors allows it to leak into the intake, each time the engine stops. I guess a good run would have evaporated it from the fuel, but these days an oil change might work out cheaper..

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