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Author Topic: 1.6l A2 NA Injection pump..... leaking  (Read 3955 times)

Reply #15March 30, 2014, 01:38:25 am

monst

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #15 on: March 30, 2014, 01:38:25 am »
So I ended pulling the pump again......
It just seemed to be taking too long....
I even did the gravity thing....
took an old empty gear oil bottle
and zip tied it upside down to the
hood support and then ran a hose
down to the ip over night....
this got a quart into the ip....
so
 then I ran it out of a pail... and
the return was looking pretty good
I mean yeah there were still air bubbles
but fuel was passing on through for sure...
It was just that the fuel was not coming out
the Hydraulic head to the injectors......
I was dribbling like and ol' manz..........
nothing significant was getting to injectors...
very minimal if any...........
     What do you think?.... Could it really
take that long.....
  I mean I have run out of fuel... and
car has died..... poured fuel in......
and you know it took a bit... but it started
up......... So what is the difference here?
   So I pulled it again... to check and see
if the parts where positioned behind the
hydraulic head.....   ANd   now I will
slap it back in........
   Very interested in some perceptions....
THanks, Micky
Jetta A2 91 1.6L Naturally Asthmatic....
Bosal header 2.25" exhaust Flomaster

Reply #16March 30, 2014, 06:31:59 am

Mark(The Miser)UK

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #16 on: March 30, 2014, 06:31:59 am »
If you have open ended fuel lines the fuel will drib out due to the small quantity involved. Try putting lies in upside down with injectors pointing towards the sky. 

Or easier perhaps,  is to measure the fuel from one/each fuel line for 10 seconds of cranking...
Mark-The-Miser-UK

"There's nothing like driving past a bonfire and then realising; its my car on fire!"

I'm not here to help... I'm here to Pro-Volke"

Be like meeee: drive a Quantum TD
 ...The best work-horse after the cart...

Reply #17March 30, 2014, 08:51:50 pm

monst

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #17 on: March 30, 2014, 08:51:50 pm »
  So I had a nice hand siphon pump today....
I stuck it on the return side of the the fuel
filter.... I drew through the injection pump about
5 litres of fluid.... I even sucked a quart
of ATF through the IP.
   MY PROBLEM: It still does not have any diesel
in the lines going to the injectors.
Cranked it over quite a bit.....
So while running the hand siphon,
the return line will go clear ()meaning
no air bubbles. Then we'd crank it for
a while(20 seconds) and then it  would
have air in the return after cranking.... There would
never be air on the inlet side(no air going into IP just fuel)....
   So I am confused as to why the
hydraulic head  is not sending fuel into the injector lines.
We replaced the o-ring on the hydraulic
head because the IP leaked but, car ran ok even though it leaked...
 I even checked to make sure that it was put back together.
 It is back together ok(no sprung parts in the hydraulic head).
   ANy IDeAs?????????
         I there a special bleeder on the IP.... ??????
I am at a loss here..... :P :( :-\
ThNKS, mICKY


Jetta A2 91 1.6L Naturally Asthmatic....
Bosal header 2.25" exhaust Flomaster

Reply #18March 30, 2014, 09:33:53 pm

8v-of-fury!

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #18 on: March 30, 2014, 09:33:53 pm »
Are you 105% sure that the stop solenoid is functioning? Rare that it failed right at that time.. but I have seen wackier.

Verify the solenoid is working as intended. Sucked in with power, let out with no 12v.

Reply #19March 30, 2014, 10:48:07 pm

Mark(The Miser)UK

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #19 on: March 30, 2014, 10:48:07 pm »
Reassemble fuel lines, and then slacken the timing bolt. Then crank and observe. If you do not get spraying of the diesel, out of the threads, then either solenoid is stuck closed or piston is snapped off.

Test with dial gauge that you get rise and fall of 2.3mm with cranking
Mark-The-Miser-UK

"There's nothing like driving past a bonfire and then realising; its my car on fire!"

I'm not here to help... I'm here to Pro-Volke"

Be like meeee: drive a Quantum TD
 ...The best work-horse after the cart...

Reply #20March 31, 2014, 08:47:44 pm

monst

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Re: 1.6l A2 NA Injection pump..... leaking
« Reply #20 on: March 31, 2014, 08:47:44 pm »
Stop solenoid...
   Sounds like it is working...
 Unthreaded it....
  Is it supposed to be two pieces?
checked it... while out. it was pulling inward....

Rise and fall of plunger... with dial indicator...
  is less than 2.33mm   it is...   2.00 mm

let me know what you think

 Thanks, Micky
Jetta A2 91 1.6L Naturally Asthmatic....
Bosal header 2.25" exhaust Flomaster

 

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