Hi all I have just developed a intermittent missfire when I come on boost in the 3 door
Some times its there sometimes it aint
I dont know where to start but at the same time my fuel pump now primes for bang on
14 seconds if the engine is of and earlier it cut out completely
the fuel pump cut out and wouldnt make any noise
I fiddled with the wires nothing opened the bonnet ,didnt touch any thing
turned the ign on the fuel pump primed for bang on 14 secs then I started as normal
Its all got to be linked
Oh and when it misses it stinks of petrol
Where do I start
Opened up the dizzy and the arm is a red 1 I thought they were black

 

Ps the head gasket is showing no signs of being gone or going

 

what condition is phase sensor in ? under cap and plastic cover. on mine 4x4 and mates 3dr both wer nackered [wires exposed/corroded ] new sensors fitted ! sorted

 

What are your plugs gapped to? And what sort of condition are they in?

 

I'm going with plugs too.

Your pump doesn't always need to prime for 14 seconds - if the fuel system is up to pressure it only primes for a fraction of a second.

 

The plugs are gonna get changed in a minute and the phase looks good

What shall I gap plugs too champions

The pumpkeeps priming for bang on 14 secs thats what I dont understand

 

Been through it today changed the plugs it was fine

But now its even worse
https://passionford.com/forum/ford-s...ct-sensor.html

 

Right it looks like the ect sensor has gone

and now all the checking of the phase has screwed that today all the plastic has gone

and the wires are all corroded and fraying apart could this be the cause of all my problems

 

Phase sensor sounds goosed if the wires are bare and corroded. A new one will probably sort it. Worth Ł20 to try it

 

Gotta be worth a go then I hate the idea of just changing things tho rather know for sure whats wrong

 

Trial and error with something like a missfire though mate. And at least at the end of it if you have changed a few bits you know they are new and shouldnt give you any further problems for a while.

 

I know gonna chang it anyhows would be nice to know exactly whats caused it

 

If you put new plugs in at 20thou and its still the same, change phase sensor, if still the same change the crank sensor (you could try taking it off and just cleaning the end of it with a rag first rather than replacing it, because they do get oily etc)

 

I got a new phase and ect here now thanx to saph cos rob

Gonna fit them in the morn and see what happens

Whats the phase gap?

 

I gap my plugs to 0.58mm

Phase should be 0.2 - 0.3mm bud.

Let us know how you get on.

 

Right changed the ECT and phase sensor it idles and revs fine

But drives the same pops bangs misses and shoots flames out the back but will run bit better with the brown plug disconected ACT.

Whats next guys

 

if it runs better with the act unplugged could that be the fault ie, giving a false reading to the ecu but when no reading at all it will go to a base setting.
Could be wrong as its just a guess.

 

I dont know its pissing me off now

 

Has it ever ran well on the current combination of chip/fpr/injectors/turbo ?

 

It was running sweet chip then all of a sudden cut out

got it going again but rough as

 

whats the wiring to the fuel pump like?? original??? or has it been redone..

do you have a SECS monitor?

 

No secs mate and the loom is orig

Its defo got to be a sensor with all the heat

Gonna change everything this week and see if that cures it if not whos best to take it to

I live in bristol (dont say Interpro) ive gotmy reasons why (dont like being ripped off)

 

check to see if you got more than 12 volts at the fuel pump,and when was the last time you replaced your fuel filter ,gaped my plugs at 0.8 mm

 

Never mate cars only been on road 2 or 3 weeks

waiting to get hold of Stu @ M Developments

 

Put a brand new phase sensor in and new plugs abit better but still wont rev past 3.5k any ideas smells really petroly

 

try an act sensor on it if its running better without, also if you can, try a map sensor on it if one of your mates has one you can steal off their car just to try

 

Its now worse with act off do you rekon the map then

 

Gotta be worth a try mate if you can borrow one for half an hour.

 

Gonna borrow 1 then

 

It only does it on boost doesnt matter if I nail it or ease it wont go past 3.5k

Gonna try a map tonight hopefully

If still no good gonna take it to Interpro see what they say

 

Have i missed something? Waiting for?

 

Just a thought could a actuater seize and cause this?

Its really stiff to open

 

Its alright Stu you answered it already now

Pm coming your way

 

did you sort it fella & what was it

 

It was the map sensor fella and poss crank sensor

Sorted it out then it blew up rebuilt it done 200 miles hen the turbo blew