Grizzly

Hello all, I have a problem you may be able to help me with.

Right, I have a 1990 T2 Vert, i've just rebuilt the engine in it.

I Fitted the engine with the stock EMS and Emission c**p still on which it started and ran fine.

The next bit is where the problems start. I decided to clean up the Engine in preprasition for the after market ems. I did a bit of reading up and pulled all the emission devices (Air pump,bac etc etc) and this left me with the rats nest looking rather bare, so i pulled that as well. Dumb as it seems now.

Now my car fires with a bit of messing about but will only run for a second or so before acting like fuel starvation and dieing.

I've checked the Fuel and Ignition etc and all seems well. Its oviously something i've taken off but without putting it all back i don't know what.

Can anyone help? i don't want to move onto fitting the new EMS until i have the motor running again incase its a fuel problem. It will make me think i have a problem with the new EMS. i like to know its running before i do any major work.

HELP!!!!!! PLEASE!!!!!!!!!

Chris

Grizzly

I have done some reading up and from what i've read it should run, I have just read a Thread that was discribing the same problem as mine which was an air leak but that was one of the first things i checked? still puzzled.

Chris

Sir Rupert Hobo

well, look a little harder, it's more than likely a vacuum leak. it was running great before you removed all the emissions right? check your gaskets, lines, etc.

Grizzly

so it should run!! That was one of the questions that i was asking myself, if i had taken somthing off i should'nt have.

I don't understand you would think it would be a masive air leak to do this, that would be obvious right?

The next thing i'm going to do is pull the Lower manifold off, i've done all the others and that remains the last one. but i can't see it being this as i have not touched it since i messed with the Emissions? Could the Emissions make it run richer that would compensate for an air leak or somthing like that?

Chris

Sir Rupert Hobo

do you still have the stock sized injectors?

the LIM should have nothing to do with this problem... where are your vacuum lines routed? you should only have about three of them now.

Grizzly

Yes, i do only have three.

I have striped it back to the Engine now and put it back making sure the seal is 100% and sure enough it ran but i've noticed another problem that is not helping.

When i took the lower inlet off there was fuel coming out of the Primary runners (like the injectors where stuck open).

I got it running fine again but when i turned it off left it 5 and tried to restart lone behold it was flooded.

Is this just Bad injectors (want cleaning) or Regulator maybe over pressuring the System?

Is it worth me trying some more 550's?

Chris

ilike2eatricers

A way to see if your injectors are leaking is to have the UIM off and then jumper the fuel pump at the passenger side strut tower (yellow plug). If you injectors are leaking you should hear them spraying and maybe even see the fuel build up in the lower intake manifold runners depending how leaky they are. You should probably send them out to be cleaned anyways though. Hope that helped.

Grizzly

Yeh, Its somthing to try. I need all the sugestions i can at the moment.

Can injectors just get blocked as quick as that? its funny how both Primarys are doing it. There must have been some dirt or somthing in the Lines?

ilike2eatricers

Does the car just rev up to 3k rpm and then just stall? It would have to be a pretty large vac leak if that was the case or maybe your AFM is unplugged? Did you use RTV (gasket sealer) for your block off plates? If you think it is a primary injector problem you could try swapping the secondaries to the primaries and seeing if the starting problem stil occurs.

Grizzly

Ok, the stage it is at now after playing with it all day is. I can get it to start when it has been left for a hour or so (it runs fine revs and idles ok) but if it does'nt start first time and you have to crank it acts like its flooded and pops and bangs etc.

This is 80% better than this morning as i'm sure it had a vac leak as well (that i have fixed now) it would only run for a second or so when i left it for an hour and i'd have to rev it quite hard to do that.

So the leaking injector problem came about when i removed the lower manifold there was a pool of Fuel in the Primary runner, i dryed it out when i saw it and less than 30 seconds later it had come back, this is taking into account there was no pressure in the rail but there was fuel there.

So tomorow i'm going to Pull it apart again and try your injector test. Would you say it will be obvious if they are leaking?

ilike2eatricers

Well if you pressurized the fuel system and could actually see fuel dripping into the runners that would mean they are leaking. If you want a temporary fix swap the primary and secondary injectors (assuming the secondaries are not leaking) so you will hopefully not have problems starting. You should look into getting them cleaned and flow tested anyways. Good luck.

Grizzly

Well, I've got it running now BUT!!! it does not like the secondry Throttle being opened and it will not go on boost if loaded up, It just dies like some one turning the Ignition off.

Well at least it runs now which is a start, i pulled the Primary injectors and replaced them with the Secondrys and put my 1000cc's in to the secondrys (just becouse i know they work fine).

Could my problem be that the stock ems does'nt like the 1000cc's? Unfortunatly i don't have anymore 550's knocking about to try? the problem reminds me off a Bad turbo i had a while ago but i'll be realy suprised if this is the case now as it was running fine 2 days ago?

ilike2eatricers

Yea 1000cc secondaries need to be tuned down with either a piggy back fuel controller or a standalone EMS. BTW what brand 1000cc injectors did you order? I ordered 1000cc Precision Turbo injectors and will be controlling them with an SAFC2.

Grizzly

Theres Rc's 1000's

So 1000's and Stock ems don't go!

Basicly if i put some 550's in it now should run ok?

Sir Rupert Hobo

yes, all 550's is what the stock ECU is meant for. once you get something to control the 1000's and tune it, you're golden.

Grizzly

Thats what i like to hear, I'll try the leaky 550's in the secondrys if all is well i'll start fitting my Microtech.

Thanks guys i thought i was loosing it for a minute back there.

ilike2eatricers

It seems like you got everything under control. Good luck!