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CarGuru > Volkswagen > [Fwd: Re: Help! '87 Jetta no start] 16 March 2005 03:38:15
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[Fwd: Re: Help! '87 Jetta no start]

Rex Burkheimer 16 March 2005 03:37:34
 

Dan
Wow, lots of good info, and much appreciated.
Let me pick through it:> No oil in the distributor?

No, I looked for that. Might be a trace, but it's not obvious.
A good check I like to try is turn the ignition on, put the car in reverse > and with a friend push the car backwards. You should hear the pump turn > on for 1-2 seconds and then back off every time the engine spins 180 > degrees (or if you prefer, leave the engine in neutral, remove the spark > plugs and spin the engine with a wrench on the cam/crankshaft).

That's interesting. If the pump does not spin, what would that indicate?
Checked transfer pump, meets specs for filling up a cntainer.>>Checked pressure pump, hardly got a dribble. Aha!
How exactly did you check these... i.e. what was it pumping into?

I followed the Bentley instructions
transfer pump - removed output hose per illustration, pushed a long 5/16
fuel hose onto the output port, other end into a graduated jar. Jumpered
the FP relay connection to run the pump a few seconds (to fill the hose.
Dumped jar, ran hose 10 seconds. The jar was filled to about the
point the manual said it should. About half a quart IIRC. Reconnected hose.
Pressure pump - Disconnected return line from the fuel distributor. This
was a 1/2" approx threaded fitting pointed to the rear, right beside and
below the "belows" portion of the intake tract. Connected a long hose,
same jar, ran pump for 30 seconds. there was maybe 1-2 ounces of fuel,
when there should have been ~21 oz. So I determined I needed a pump.
Did you have > the transfer pump plugged in when testing the pressure pump?

Yes, pretty sure I did have it all hooked back up. I am very familiar
with the cycle sound of the transfer pump.
Dumb questions I know, but its worth a shot.

LOL I feel really dumb right now, so anything's appropriate.

Maybe there is some sort of> blockage between the main pump and the transfer pump... bad pressure > accumulator or filter perhaps?

Filter is relatively new.

You said "sounds better"... A loud buzzing main pump is a sign of a bad > transfer pump (usually). More specifically, its a sign of fuel starvation > to the main pump, so if the transfer pump is good, that points even more > to a blockage.

The old pump I could not hear. The new one was audible but not noisy.
When i pulled the pump, I got a lot of fuel out of the reservoir.
The screen over the pump was not clogged.

I was also thinking electrical, but I'm now thinking it> might just be a clogged filter or hose or something. Maybe disconnect > everything and try to blow through it.

Yeah, makes sense to try that next.

Just some background, may not be significant, but you never know.
When I bought the car it had set up for 2 years. Once I got it cleaned
up and body repairs made, I drove it on the street for a while. It
never did like to rev past about 5500, felt rich all the time. It ran OK
otherwise, had enough torque to get around without revving it.
The cat converter is blown out. The o2 sensor is in the cat,
positioned such that it is shrouded from direct exhaust flow.
Consequently, the sensor never gets up to temperature. Likely it has
other 'issues'. For example, the switches - full throttle and another -
on top of the throttle body are gone.
But with all this, it started always and ran fine. the last couple
of years i didn't drive it at all except to move it around the shop.
Then I dusted it off to use as my instructor car at a track event. I ran
it hard for about 5 30-minute track sessions. It seemed to run a little
rough coming off the last time. Next morning it would not start.

Anyway, I'm going back out there tonight and follow your suggestions. If
anything more occurs, please share it.

Thanks a lot for taking the time to give me such good detail.
I hope you don't mind me replying through the NG, but your ISP
spamblocker bounced this direct reply.

--
Rex Burkheimer
Marketing Director, WM Automotive Warehouse
Fort Worth TX 817.834.5559 x3105
Visit our forum at http://p083.ezboard­.com/bwmpartsplus
Add comment
Rex Burkheimer 16 March 2005 03:38:15 [ permanent link ]
 

Daniel J Meyer wrote:> In article <113drnfdub88564@co­rp.supernews.com> you wrote:
You might also want to check the thermotime switch,

I checked it per Bentley and it checked out.

however... the> thermotime swich *ONLY* affects the cold start valve when the car is > starting. The high side of the cold start valve is connected directly to > the starter switch, so the moment you get off the starter the cold start > valve stops (unless its leaking or there is a faulty switch or wiring or > something).

I thought it continued as long as the thermo time switch was running>
I tend to think this is an electrical problem, but if you said one of the > fuel injectors seem to be weak, you should check the others. If its just > that one, perhaps the injector is bad, if not then it sounds like a > general fuel problem. Perhaps the pressure regulator, or fuel distributor > or air flow meter (use a magnetic pick-up tool, check if the meter moves > freely),

How do you do that with the intake tract connected? I did pull it off
the airbox and it moves, but has some constant friction. I looked for a
way to check movement en situ

if you have fuel pressure testing equipment check that. Did you> remove the fuel filter in the banjo bolt at the fuel distributor?

No, but I will check that first.

Is it> possible a fuel line is simply blocked somehow?

Sure. We did a lot of rockin' and sloshin' out there on the track, so
something could have come adrift in the plumbing.

Thanks much.

Rex Burkheimer


--
Rex Burkheimer
Marketing Director, WM Automotive Warehouse
Fort Worth TX 817.834.5559 x3105
Visit our forum at http://p083.ezboard­.com/bwmpartsplus
Add comment
 

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CarGuru > Volkswagen > [Fwd: Re: Help! '87 Jetta no start] 16 March 2005 03:38:15
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