Prior to starting my car I let the car aspirate for a few seconds...Then I turn the car over...but the sound still continues and it sounds horrible...Liike a bad electrical connection....

What is going on...

 

Might need more information. Could you explain the aspiration process?

 

I was told when I purchased the car many years ago that before you turn the car over you had to turn the key 3/4 of the way and allow the fuel to reach the turbo prior to stating the car... otherwise it will not start....

 

Fuel pumps running... its normal.

And there is no reason to let them run before turning the car over.

 

"fuel to reach the turbo"? Someone is pulling your leg. Your fuel pumps should only run as you start the car (i think it's activated by the air moving over the metering plate?), if you hear them running with just the ignition on then the lead is disconnected from the back of the fuel head, quite dangerous if you have an accident and you rupture a fuel line as the pumps will just pump fuel everywhere, the rest is obvious.

 

Agree with the above.

What's the bad electrical connection sound like?

Leonard

 

Fuel pumps make a bzzz sound if thats what you hear...

 

I think JBL930 answered my question....I think the fuel pump must be about shot or I have a kink or something close to it wrong...

Since I have owned this car for almost 3 years...I have never been able to turn the car over just by turning the key...I have had to wait several seconds while the fuel pump kicks in....At which then the sound goes away....

The sound continues and it gets worse....The car sporadically gets sluggish and acts like its about to die and the sound is like when electrical wires get crossed

 

The lead going to the back of the fuel head is just an on/off switch for the pumps, i think it's wired into the relay or something? It's just a safety thing like i explained. What doesn't make sense is you saying that you wait for the fuel pumps to kick in with the ignition on, as far as i understand you should be there forever waiting as they shouldn't start making a noise/running until the engine cranks over and air starts going through the fuel head.
If the wire i've mentioned is connected then you are hearing something else, i've no idea what though, maybe a dodgy relay or your CDI box is on it's way out? If the wire isn't connected and your pumps are running then it does sound like they are shot doesn't it, there are two, one in the front and one in the rear, try and work out which one is noisy.
You can bridge the relays to get the pumps running without the engine running or disconnect the lead i've been going on about, if you reach around the left hand side of the fuel head you will feel a wire connected to it, just disconnect it and the pumps will run, make sure that you reconnect it for obvious reasons

 

JBL is on the money. From what I've learned here on the forum, fuel begins to flow due to the rising of the actuator plate in the fuel head. I've never had to wait/asperate (nice word) to start my car. I just jump in turn the key and presto, she's singing like a champ...

Good luck on finding your problem.

Jitters

 

With my 930 you heard the CDI when you put the keys 3/4 round. Not the pumps.

 

Jitters what year is your car....

 

Same here Nathan - tho - my records show the PO's shop wired my '87 US car to "Euro" configuration (if there is such thang), maybe mine does something different than a US import car.

When I turn my keys "on", I get a quick buzz which I assumed was the fuel pump pressurizing the system. Guess this is the "CDI" which I'm still too noob to know what that is. D'oh sorry, edumucate me maybe?

In the PO's wiring conversion they also installed a manual fuel pump prime rocker switch up under the panel to the right of the wheel in the switch blank there. My 39k car has 'somewhat' of a warm-start issue (despite full tune-up bits) so priming the system for a second or two with the switch lets her fire right up. I know, somewhat of a bandaid not fixing the root cause but sure makes it livable. Maybe something for you to consider once you right this 'buzz' - your description of it sounds horrendous. Tho I too dig your use of "aspirate" heh heh.

Good luck in your hunt, do report back to let us know what you find in case it happens to us.

-Paul
www.krasusky.photos.us.com

 

Hey Scott,

It's an 88...

 

Have you tried changing your fuel accumulator? If that doesn't work get your injectors checked, sounds like you're leaking fuel pressure, you shouldn't need to prime the system to get fuel pressure up, but priming it the way your talking about would indicate you have a leak. The quick buzz/hum you get from the pumps could be your metering/actuator/whatever it's called plate sticking a bit, might be worth giving the fuel head a good clean out too.