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Posted by: rcrgrl May 24 2006, 05:00 PM

Anybody else feel like all they ever do is ask for help fixing their car? Anyway, please help - I have no backup car this week, ice skating lessons for a 4 year old, science fair for a 4th grader and a car that is acting up!! Here's the scenario-
Yesterday afternoon, car cold, cranks over fine, no start. Try again, starts fine, idles a little low.
Drive 30 minutes, stop for 5, try to start, cranks fine, won't start. try again, does start
Drive 5 minutes, stop, - cranks, no start, tryagain, no start, 3rd try does sttart
this morning, first start of the day, starts ok, idle low, i check under the hood, there is a little dampness (gas) near fuel injector #1, nothing else. started ok though, so i go about my day, checking every stop for leaking fuel, see none.
this afternoon, repeat of yesterday. this time though, on my last stop, it took 4 trys and prayers from my kids to get it running. wouldn't bumps start either.
also, this afternoon i notice that at about 2400-3200 the engine is stumbling a little, never done this before.
i'm thinking its not gettting fuel. - or maybe too much fuel maybe the injector is going? i did just replace the pcv valve? i heard the fuel pump prime so i don't think that's it.
like i said, i have very little time today and am hoping to start looking in the right place - my thoughts are
pull & check plugs
check for spark
but as for checking the injectors, never done it?
maybe timing?

your thoughts?

Posted by: Joe Sharp May 24 2006, 05:03 PM

Wild guess, does it still have points?
:PRMAGRIN: Joe

Posted by: Jeffs9146 May 24 2006, 05:05 PM

CHT sensor! (Cylinder Head Temp Sensor)

Jeff

Posted by: rcrgrl May 24 2006, 05:17 PM

good thought joe, but yeah its still got points... next?

jeff, does a 1.7 have a CHT? and why would it make a difference?

Posted by: Jeffs9146 May 24 2006, 05:23 PM

The computer gets a reading from the temp sender and adjusts the fuel/air mixture to compensate for a warm or cold motor.

My 2.0 would die at the stop sign once it warmed up. Sometimes I would have to push it to the side and wait untill it cooled down before it would start.

It took me 2 weeks of diagnossis to figure it out!

I thought all FI 914's had one?? Maybe someone else would know for sure.

Jeff

Posted by: Joe Sharp May 24 2006, 05:34 PM

Race: It has a CHT, and there is a test for that. The CHT is a resistor that changes it's value with the temp of the head.
Check the Points to see if they open and close (pop of the dist cap with the car in 3rd gear and move it till the lobe on the dist shaft points at the contact piece of the points). You should have about .017" about the thickness of a match book cover.
I don't run points because they are a problem.
:PERMAGRIN: Joe

Posted by: Aaron Cox May 24 2006, 05:40 PM

GET A PERTRONIX or a compufire and kiss points problems away!

Posted by: So.Cal.914 May 24 2006, 05:41 PM

QUOTE(Joe Sharp @ May 24 2006, 04:34 PM)

Posted by: rcrgrl May 24 2006, 05:48 PM

yep heard the evil points argument before. not a fix i can make tonight, don't think its the issue though as the points seem fine & adjusted,,, of course i have no dwell meter (i know i know its on my list)

Posted by: rcrgrl May 24 2006, 05:53 PM

plugs seem a little pale for my taste. although there is carbon on the ring....?

Posted by: SirAndy May 24 2006, 06:27 PM

QUOTE(rcrgrl @ May 24 2006, 04:00 PM)

Posted by: Joe Sharp May 24 2006, 10:14 PM

Race: Thats a little too lean. V8 Sean lives down near you, maybe he will chime in.
Some good info here
http://members.rennlist.com/pbanders/
Paul Brad Anders is Thee D-Jet Guru. Sorry I don't do links.
:PERMAGRIN: Joe

Posted by: rcrgrl May 24 2006, 10:23 PM

yeah too lean was my thought. been on paul's sight. hafta admit - this is hurting my head, its a far cry from my rochester ... wonder if that'd fit under the hood

about that leaky injectoor - i lied its #2 - and its barely there, but seems to backup from the little rubber hose that goes from the fuel rail (is that right) to the injector itself. is there some kind of sealant i can put there? and why would it do that? really don't want to blow up my car.

Posted by: Thack May 24 2006, 10:37 PM

It could be something as simple as low fuel pressure or a dirty fuel filter.
It sounds like with the multiple starting that your system is trying to build pressure.

Posted by: Dr Evil May 24 2006, 10:57 PM

You can just replace the hose from the injector rail to the injector. Its like $.10/inch at the local stores. I think 5/16" works, but check first. Also, get the smooth hose clamps without the holes for the gear (these are for fuel and the others are less safe).

As for intermittent stuff:
-the CHT can have an intermittant open causing a rich running condition (IIRC)
- Fuel pressure intermittent could be the filter as stated above and could cause the problem.
- Points in my experience are not that big of a deal to do, but take some learning. Just check 'em and go from there. They are not all that hard to adjust in a /4.

(Just consolidating info)

Posted by: KELTY360 May 24 2006, 11:11 PM

QUOTE(Thack @ May 24 2006, 08:37 PM)

Posted by: SirAndy May 24 2006, 11:34 PM

QUOTE(Thack @ May 24 2006, 09:37 PM)

Posted by: rcrgrl May 25 2006, 01:03 AM

i've got an extra fuel filter in my garage, been meaning to change it, but no time tonight to swap it.. i'll let you know. thanks all!

Posted by: Joe Sharp May 25 2006, 07:07 AM

Good Luck Race: I have a Love Haet relationship with D-Jet. I have a souped up 2056 that is cammed and ported and makes great power. Linda's D-Jet was worked on for 18 months by 3 shops and myself, before she finaly desided to put carbs on it.
There some good pictures of the sensor lay-out in my blog.
:PERMAGRIN: Joe

Posted by: Joe Sharp May 26 2006, 10:24 PM

Whats going on Race. Did you learn anything or do we need to enlist the guru's.
:PERMAGRIN: Joe