Granada 2.8 i running problem

[Granadaman72]

I bought a '85 Granada 2.8i auto last night (thred in readers rides) on the way home it ran absolutely perfect until id covered approx 20-25 mls about 40 mins, mostly on the motorway. Then it spluttered and about 2 seconds later lost most of the power causing me to pull into the kerb, i managed to nurse it a short distance to a safe spot but after that it wouldnt move under its own power and was very lumpy, almost like it was out of fuel. It would restart and pick up to about 2500rpm on the throttle but immediately die back again. An hour later i returned and it ran fine the rest of the way home, its been fine again today but ive only done around 10mls. I'm suspecting the fuel relays for over heating but what other options are there? Overheating pump, coil, dirt in fuel? I'm afraid i have very little knowledge on the 2.8i's. I'm going to change the relays and check the earth connections/wiring etc, is there any way to test the relays?

[Deleted]

sounds like the cold start stuck on (common problem).
relays and fuses are fragile at best on these so be carefull,
under drivers side footwell theres a fuse block check for water damage (another common problem)
as far as i can remember fuel pump relay is purple and is behind or around the passenger side footwell but these just fail and normally get bypassed.

[mk2cossie]

as above with the cold start stuff. can usually check that by unplugging the cold start injector though ;D
Other than that, the exhaust clearances like to close up, may just be that

[Deleted]

Got an air leak above the metering unit? Dads XR4I one came loose once, Started and ran fine. As soon as the rubber of the air intake from the top of the metering unit got warm, It let in fresh air and wouldnt run right...

Try the jubillee clips are all secure around that... ?

[Granadaman72]

Thanks guys ill look at those, ive had the relay out today and its a bit buckled due to heat so definitely looks like it been getting hot, swapped it for another, ive redone the 2 earth wires underneath it, is that where it earths to or is there any others i should check?

[Granadaman72]

Well i thought id fixed it but apparently not, i changed the relay, the old one was a bit melted. Did around 15 mls today stopping and starting, car ran faultless then all of a sudden died again without warning, just started spluttering and wouldnt move again under it own power, returned 40 mins later and ran fine again all the way home, about a mile. Any other idea's please? Ive changed the relay, redone the earth connections on the passenger inner wing, checked the pipes, i tried disconnecting the cold start wiring etc but still wouldnt run. The fact it seems to play up after 40 odd minutes of driving and is fine after a short wait leads me to think its heat related, could it be the coil, fuel pump? The pump seems a bit noisy to me, really need to sort this, nearly got rear ended today

[vaughant]

Tough one without really being there to see what's happenning but the old k-jet system,despite being pretty reliable and robust can be prone to all sorts of issues.

First thing with any k-jet is air leaks,check all your breather systems,pipes,airbox,injector seals etc.

I'm assuming you've done filters etc but that would also be another route to look at.

On k-jets fuel pressure is very high and very important on these so if possible try and get an inline gauge to check its ok.

The fuel pumps do get a bit noisy over time but don't generally fail easily,although there's loads of replacement options available.

I had a similar problem on an rs turbo years ago and it was the metering head itself sadly.

Not sure if you'll easily get a replacement for a ford but the sierras and capris used them so you maybe ok,don't forget Volvo used k-jet stuff as well as merc so it must be possible to cadge something together.

Rule the obvious out first but then start looking towards the metering head as this effectively controls nearly all your fuelling.

Or do a boa conversion!!!!