91 Eco Diesel idle?

[DAKOTAKIDD]

Hey guys,  I just changed my fuel filter on my Eco diesel 1991.  I have changed this a few times in the past.  When I got it all hooked back up I got the engine started (took a few attempts), then I cracked one of the injector lines at the pump distribution block to get rid of the air.  All went well--Car runs and drives great.  As the car was idling, I decided to clean the fuel off the pump distribution block and lines with some brake clean.. Once I sprayed the area the engine's idle increased for a few seconds and then back down to normal.  Do I have an air leak now or is there something on the pump that senses air pressure or something that could suck in the brake clean and then burn it off.

Let me know what you guys think..

[ORCoaster]

It went in the intake and got burned in the process.  Got snorkely beak on it or something else?

[DAKOTAKIDD]

Snorkley beak?? I'm not sure what you mean..I removed the stock intake airbox and replaced it with a style that gets air through the fender.  Still a VW box but not stock

[ORCoaster]

Something else then as I doubt vapor would have gone in from the side from that far away.  I was thinking you might have had it open to the front somehow and vapor went in that way. 

[DAKOTAKIDD]

I just tried it again and it did the same exact thing.  I went through 1.5 cans of brake clean and still can't pin point it.  Sometimes it seems from the inj pump dist. block side and the last time it was the timing belt side of the pump.. Now I can't get it to do it. 

[bbob203]

the stock airbox is more than enough air flow for even a high hp car let alone a stock eco.... I would advise against suck air through the fender... you could suck in water and ben a rod like someone on this forum had happen...

[DAKOTAKIDD]

I changed out the box because I was sucking in water with the stock setup.  Since I changed it out no more water has gotten into the filter and box.

[bbob203]

Interesting I've never had water get sucked into mine could you post a pick of yours so I can see it?

[TylerDurden]

Stock ECO intake draws air from behind the headlight, unless engine is cold, then it draws from behind the block via damper.

Top of picture faces the front of the car:


Flapper in the middle looks to be stuck in the warm-engine position, air enters through the tube from a shroud surrounding the headlight.




As for brake cleaner vapors... even the slightest whiff into the intake will raise the idle.

[DAKOTAKIDD]

My stock set up is like that. The intake behind the headlight should have some sort of splash guard.  Mine was missing previously to me buying the car.  Driving in heavy rain I would suck in water

[8v-of-fury]

The fender intake is by far superior. It is behind the inner metal fender and above the fender that shields from the wheel. The only way to get water in to that cavity is to submerge the car up to that point. Water does not easily find its way in to that cavity. I have plowed quite a few deeper than I thought puddles with the 1.6TD with the fender sucker intake and it was a dry  filter afterwords.

The brake clean near the pump is interesting.. The pump should be at a minimum 50psi when idling, so if it had a leak you'd know about it. The high pressure side is 2000+.. again, you'd notice a leak.

Is it a stock eco pump? Do they have the boost line that goes from intake manifold to pump at all?? I haven't worked on many ECO cars to know myself.

[TylerDurden]

ECO pumps have no aneroid.

They do have the inline heater for vapors in the hose from the hockey-puck to the intake plenum. That provides two more potential points for vapors to get sucked into the turbo if the hose clamps are loose.

[DAKOTAKIDD]

Here is my pump....

[8v-of-fury]

That is a full TD pump no?

[DAKOTAKIDD]

I have no idea---you guys are the experts