318is which injectors will be ok? Quick reply needed!

[Bullys_special]

My ongoing issues have lead to the mechanic saying it now must be a fuel injector. He is at a scrappys now but all the injectors there seem to be blue whereas mine are orange? Do i need to match them exactly with the number on the top that I cant see?

[Bob_S]

yes needs to be yellow same as the big 6's in 5's and 7's

[Bullys_special]

Cheers so exactly what other bmw's can the injectors be swapped with?

[Bob_S]

anything over 3ltr

[Bullys_special]

ok thanks again, im a bit dim when it comes to things like this so basically any bmw over a 3ltr the injectors will fit my 318is? Just im at a scrap yard now!

[Bullys_special]

Anyone got some more clear advice on this one please?

[Turbo-Brown]

You need to look at the part number on your injectors and get something which matches that I'd have said!

[Bullys_special]

I did think this would be the case but I was hoping someone would know with what E30's the 318is injectors are compatable with. Surely someone!

[Chris-W]

No other E30s used the same injector.

If you're just after a single injector let me know.

Cheers,
Chris

[Bullys_special]

Oh well its not likley i'll find a 318is in the scrap yard. Its the mechanic that said I needed a new injector I dont have a clue to be honest but he did run a diagnostic on it and has alread changed the ICV. Hopefull it will be just one injector but who knows. Suppose the next step is to take em out and have a look at em. I thougt these diagnostic computers told you exactly whats wrong?

[Morat]

The modern ones might do, but on the E30 we're talking about a computer that was old when the ZX spectrum came out!

[Bullys_special]

lol, well im clueless as im no mechanic. I looked to see if I could remove the manifold to get at the existing injectors and clean them but I bottled it before I undid a single bolt. Too worried ill break something or not be able to put it back together.

[Demlotcrew]

No other E30s used the same injector.

If you're just after a single injector let me know.

Cheers,
Chris

I thought that the big M30's did!

[Chris-W]

No other E30s Andrew.

[Andyboy]

Hang on!!

If you have a 318iS that only runs on three, it's not the injector but the ECU. These ECU's have a coil driver for each cylinder and the iS ones were well known for failing on just one.

[Demlotcrew]

No other E30s Andrew.

True no E30's but E34's and E28's and E38's are easier found in scrapyards than E30's these days

[Chris-W]

E32, you mean

[Bullys_special]

Hang on!!

If you have a 318iS that only runs on three, it's not the injector but the ECU. These ECU's have a coil driver for each cylinder and the iS ones were well known for failing on just one.

So am I better off getting a new ecu then? If so does it need to be an e30 318is specific one?

I can see me changing a few more bits before I have a car that runs!

[Bullys_special]

Also wanted to mention that the self diagnostic system does not seem to be working i have followd the instructions but no light flashes at all?

[Andyboy]

So am I better off getting a new ecu then? If so does it need to be an e30 318is specific one?

Yes.

[Bullys_special]

Bloody hell! The mechanic fitted a ned injector last night £55 part £25 labour it rans relly well for 10 miles now its kangarooing all over the shot again! My kingdom for a decent mechanic!

[Bullys_special]

So am I better off getting a new ecu then? If so does it need to be an e30 318is specific one?

Yes.

The mechanic said an ecu fault would have showed up on the diagnostic test? He ran it again after fitting the injector and it didnt come up wit any fault?

[Bullys_special]

Im totally puzzled as to what to do now

[Ant]

Take it to someone with product knowledge dude.

Andyboy is 100% correct re the ECU , check for spark @ all 4 leads before doing anything !

The fault code "cheat" wont work on a UK car, the check engine lamp is not connected, Carsoft would pull any stored faults, but TBH these are not that complicated.

you can check the resistance of the injectors to see if one has failed or is blocked, easy test with a multimeter

Post up your location too, or better still add to your profile, we'll not come and steal your ride, most likely you might find another zoner, local, with a better idea than this "mechanic"( loose term)

Keep us posted

[ShepsEvo3]

What exactly is happening with the engine?

I just did an engine swop on a 318is (chain failure ) and the engine I fitted started playing up, ie not idling very well, misfireing and the like. Initial gut feeling was the AFM, but a bit more digging it turned out to be the TPS. Replaced that and all is back to normal.

As Ant says, these are not complicated systems.

Also, backing up whats been said about the drivers inside the ECU, I ranted my mothers 318is into work once, left it ticking over outside for a few minutes and when I got back to it, it was misfireing. The was the ECU!

Good luck mate.

[Bullys_special]

Thanks for the responses guys, to sum it up the car ran really well after the injector was replaced for about 10 miles then it started jerking about stopping and going intermitently. The mechanic looked like he knew what he was doing.

After the ICV replacement didnt work he ran the diagnostic again, he said his system said it was an injector but didnt pin point which one. he narrowed it down to number 1 or 3 and as the plug on 3 was coked up he changed that one and as i said it seemed to work. He now wont answer his phone so im stuck having to start all over again with another garage on Monday.

I live in Edinburgh and cant seem to find any BMW specialists without resorting to a dealer.

[Bullys_special]

I read somewhere that e30's dont like the bosch 4 point plugs which I fitted two weeks ago. I changed them today the ones I took out were all black, after fitting the new ones I did 10 miles and it was sweet then the problem returns jumping and missing all over the shot!

[Martinaston]

After this ten mile limit, would that be the point the car reaches its running temperature ?
If it revs ok while its still warming up and then mucks about once its warmed up it sounds more like the temperature sensor is buggered.
If its the same as the 318i then it will be the blue one feeding the ECU not the brown one feeding the temp guage.

[Bullys_special]

Thanks Martin, ill change that then. is it easy enough to do?

[Bullys_special]

I changed the blue sensor cleaned the glossy black plugs and it again ran well untill it got up to temperature then started misfiring all over the shot and jerking about again. Any other ideas?