Re: Starting problems

[srubano@xxxx]

All my timings are correct. If I spray a small amount of starting 
fluid into the intake the engine will start right up and idle for a 
second then die. That rules out any timing issues and/or ignition 
problems. I am very familiar with engine timing's and such. The Bosch 
fuel system is very new to me since I've worked primarily on MFI & 
TBI electronic fuel injection systems. I just ordered a Fuel pressure 
gauge for the Bosch K-Jetronic system from JC Whitney for $54.95 
(could have gone to more parts for my car, oh well. 

Right now I have these symptoms since I last posted. I have taken all 
6 injectors out and placed them in cups. I jump-started the fuel pump 
and let it run. Only three of the six injectors spray a small amount 
of fuel. When I push down on the air meter flap the amount of fuel 
increases coming out of the injectors for a brief moment then 
decreases. I've taken out the other three injectors that weren't 
spraying and I attached my shop air hose to it. I set the pressure to 
apporx 75lbs and shot some air into the injector. All of them opened 
up without a problem. Any pressure less than approx 60lbs the 
injectors stay closed. I sprayed some cleaner into the injector then 
again applied 75 lbs of shop air into the injectors; the cleaner 
sprayed out the nozzle what seemed to be a good spray pattern. I've 
checked my system for fuel leaks and I don't have any. I am assuming 
that maybe my warm up regulator may be bad/stuck open and letting TOO 
much fuel back to the fuel tank causing a low pressure? I guess I'll 
find out when I receive my Fuel gauges sometime next week. i will 
admit I have tinkered with the CO adjustment and now it's probably 
all out of whack. Anyone now where I can start it as a reference 
point once I figure out my fuel pressure problem?

Thanks to all that responded to my questions.
If anyone else has anymore suggestions please feel free to email me. 
I am trying to get my D ready for my wedding in 4 months and I still 
have a lot of work to do!! :) I am starting to get frustrated with 
this problem (not the car, just the fuel system).

Steve Rubano


--- In dmcnews@xxxx, jtrealty@xxxx wrote:
> [MODERATOR'S NOTE: The use of ether or other starting fluids can be
> hazardous to yourself and your vehicle. The use of ether or starting
> fluids is suggested for experienced professionals under controlled
> conditions, and the reader should take appropriate precautions
> and gauge his/her skills before undertaking the test David 
outlines. 
> The use of ether carries the potential of engine damage and fire if
> used indiscriminately.]
> 
> 
> 
> The amount of fuel comming out of the injectors is directly 
affected 
> by the position of the air sensor plate. At idle with the plate 
closed 
> you don't get alot of fuel out of them. If you push the plate down 
you 
> will see more fuel come out. If you adjusted the mixture screw be 
> aware that it is VERY sensitive and a SMALL adjustment will throw 
the 
> air fuel ratio far enough out of whack that the engine will just 
> sputter and die. Since you say that you took the engine apart can 
you 
> be sure that you have everything correctly timed? To rule out a 
fuel 
> problem pull the #7 fuse to the fuel pump and squirt a LITTLE BIT 
of 
> ether into the engine. If it doesn't start right up for a couple of 
> seconds start looking somewhere else like valve timing or 
distributer 
> timing or ignition wiring. Pull a spark plug and make sure it is 
> firing with a nice blue spark!
> David Teitelbaum
> vin 10757