HELP - Missing and breaking down.
Posted
#1639843
(In Topic #228174)

Old Timer

Fuel pump has always been noisy but today was noisier than normal and then the noise slowed down - car would tick over happily but would not drive under load. Missing spitting etc.
So going to replace the external pump - VW heritage about £60.
Want to replace the internal tank pump - not sure what to buy or from where. Guidance please.
Filler neck was done in lockdown so all good there and internally was sound to be fair.
Hall sensor connection a bit iffy so going to refurbish a spare dizzy and fit that.
Any thoughts on the above should I be looking for something else.
It drove onto the tow truck - just, so can move but not much


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Posted
Local Hero

1988 Mk1 Golf GTi Cabriolet 1.8cc DX, K-jet. Daily drive. 317,000 miles and counting
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
1978 Mk1 Scirocco GLS 1.6cc FR, Webber carb. Weekend toy.
Posted

Old Timer

HELP - Missing and breaking down.

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Posted

Local Hero

Make sure that your tank is devoid of rust and a clogged swirl pot, as the restriction of fuel to the pump makes it whine and go bad faster.
On the 84.5 and later Cabriolets it is usually a bad in-tank pump that or lift pump that causes the main one to whine and complain, then stop working after a 20 minute run, let it cool, and the car re-starts and runs for about 20 minutes rinse repeat and so forth.
What do Divorces, Great Coffee, and Car Electrics all have in common?
They all start with GOOD Grounds.
Where are my DIY Links?
They all start with GOOD Grounds.
Where are my DIY Links?
Posted

Old Timer

HELP - Missing and breaking down.
Downside the tank is pretty full and I don’t have enough fuel cans - so a challenge to be overcome there.
Heritage don’t have a pump in stock so need to find one that can be delivered ideally by the weekend.
Is there a part number for the small hose from the tank to the pump inlet? I want to replace it.
I note also until I take this hose off I can’t pull the pump bracket back enough to get at the electrical end and the outlet.
On the plus side the foam around the pump looks in good condition.
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Posted

Old Timer


https://www.classic-vw.co.uk/mk1-golf-fuel-tank-hose-90-degree-171201311d-3889-p.asp
They also do pumps, but not sure you'd get one for the weekend.
Take pictures of how it all goes back together under the car - otherwise you'll struggle.
I'd also get some penetrating oil on any of the fuel line fittings that you want to undo - I snapped a metal fuel line on mine trying to undo one - that was really annoying!
Posted

Old Timer

HELP - Missing and breaking down.
Then can slide the bracket back and off along with the foam. Pictures of the outlet connections and disassemble.
Managed to order a Bosch unit fro eBay for £60 with delivery so that piece sorted.
Just hope the outlet end comes apart with enough ease. The pump in there looks all black from what I can see under the foam so guessing it is an aftermarket pattern pump. Hopefully the Bosch will be an improvement.
Will the improved pressure output through the metering head make a difference? Will I need to have it re-tuned or will it simply manage itself ? I assume it will be fine but someone else’s experience would be good
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Posted

Old Timer


£60 for a new bosch one sounds good - car to share? I did bench test my pump, it ran, but I have no idea if the flow rate is still up to scratch so it's good to know a decent one won't cost me an arm…
J
Posted

Old Timer

HELP - Missing and breaking down.

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Posted

Old Timer

HELP - Missing and breaking down.
It is a pierberg on there
Lots of cr*p

caught in the filter but not sure how long it’s been fitted so could be many years of build up will check the receipts later.
I did the filler neck in lockdown so I know that’s good. Visually the tank looks good so hoping this is just the time of fitting on accumulation of junk.


Hopefully the new one will have me back up and running if it cr*ps out a bit too fast then I will have to drop the tank and fit a new one.

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Posted

Local Hero

Backinblack said
I will have to drop the tank and fit a new one.![]()
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IF you do that, Spray the axle studs at the rear with a penetrant for a few days after brushing all the debris and rust off of them. Then about 20 minutes prior to removal. USE A IMPACT WRENCH (electric or Air), you will less the chances of Torque Shearing the things off the body, as that will happen if you use a Breaker Bar and a Socket…. Seen it happen too many times.
You don't have to drop the rear axle off the car but just lower it a wee bit, be mindful of the rubber brake lines and if you haven't replaced them yet, now would be a good time to do it…as you can get to both sides of the connection easier…(oh and use Brake line wrenches only, then going back wrap the threads with Teflon tape, and bleed all 4 of the brakes.) I usually place a plastic sandwich bag over the lines to catch the drips.
What do Divorces, Great Coffee, and Car Electrics all have in common?
They all start with GOOD Grounds.
Where are my DIY Links?
They all start with GOOD Grounds.
Where are my DIY Links?
Posted

Old Timer

HELP - Missing and breaking down.

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Posted

Old Timer


Posted

Old Timer

HELP - Missing and breaking down.

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Posted

Old Timer


There is also a filter in the tank (assuming it's an original gti tank) bit of a pig to get out, but mine was really cacked up.
Posted

Old Timer

HELP - Missing and breaking down.
Apparently the tank is not too hard to drop out but hoping to avoid it.
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Posted

Old Timer


You don't have to drop the tank to get to the internal filter, you get to it through the sender guage hole under the rear seats.
Posted
Old Timer

Posted

Local Hero


On the drive
T25 Diesel…sameoldblueshi£ (currently under resto)
Rocco gt2….1990 secret 2…(currently under resto)
Mk4 99 1.8t indigo blue Gti with 43k miles
Caster 93 clipper JH Green cabby
Snowy 91 GTi White cabby( sat waiting for inspiration)
Myvalver 89 GTi Grey mk2 16v
Yuppy Flu 91 GTi Flash Red Sportline
Golf mk1 owner's club on Spotify
Mk1 golf owners club playlist: Golf mk1 owner's club playlist - YouTube
T25 Diesel…sameoldblueshi£ (currently under resto)
Rocco gt2….1990 secret 2…(currently under resto)
Mk4 99 1.8t indigo blue Gti with 43k miles
Caster 93 clipper JH Green cabby
Snowy 91 GTi White cabby( sat waiting for inspiration)
Myvalver 89 GTi Grey mk2 16v
Yuppy Flu 91 GTi Flash Red Sportline
Golf mk1 owner's club on Spotify
Mk1 golf owners club playlist: Golf mk1 owner's club playlist - YouTube
Posted

Old Timer

HELP - Missing and breaking down.
Still waiting for the new tank to pump hose to arrive and then I can get on with sorting it.
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