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Re: [T3] STill geting air in fuel lines.


On Thu, 29 Nov 2001 14:26:31 -0600, Jim Adney wrote:

>On 28 Nov 2001, at 20:51, Mark Healey wrote:
>
>> 71 manual FI square.
>> I'm still getting air in my fuel line.
>> Symptoms:
>>
>> When I run the fuel pump staticaly I hear a high pitched squeal coming
>> from the pressure regulator.  It gets higher and then stops.  If I try
>> to start the car before the squeal stops it won't
>
>This is pretty common and I don't think it is of any real concern.

But it is annoying.

 I THINK it
>means that there is air in the line at startup and the pitch rises as the air is
>cleared out. It is a sign that there is no NEW air being pulled into the line
>during operation.
>
>> All the fuel lines at the rear end of the car are new.
>>
>> The two steel lines runing to the front of the car are OK, judging
>> from the amount of gas that ran out while I swapped the old line with
>> the new.
>>
>> There is no noticible gas leaking.  At least I don't smell any.
>
>You may not smell it. You should really take a good look at all of the
>connections looking for wetness with the pump running.
>
>> It's running lean.  Which may be an entirely seperate problem.
>
>I agree, probably separate.
>
>> I checked the injectors.  #1 seems to be more of a stream than a mist
>> but not much.  Can I clean it or do I have to get a new one.
>
>I don't know any way to clean them other than to run them with good gas and
>possibly some FI injector cleaner additive. I'd make sure your overflow hose
>is intact so that you're not getting water into the tank. This would cause rust
>which could involve the injector nozzles.

When I bought the car it was missing but the P.O. had stuffed some
paper towel in the hole.  I replaced the hose with some radiator hose
and a copper plumbing elbow.


>You might try pulling off the plastic covers from the injector tips and seeing if
>there is any rust anywhere that you could carefully scrape off.

No visible rust and it is only one.

>Are these genuine Bosch injectors? If not, you may want to replace them
>anyway. The spray should form a nice uniform cone.

Haven't looked for text but they are the ones with a yellow tip.

Mark Healey
71 FI auto square
71 FI manual square
marksvw@healeyonline.com


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