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Nov 21, 2018 22:38:36 GMT
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Hello just had some bad few days with the mk1 golf 1.6 GTI, basically it starts up on and i drive it and then I park up and go to a shop or even at the petrol station so I stop for a few minutes and when I come back to start it up its just doesn't want to know the voltage of the battery is ok it turns over but doesn't fire up and then out of the blue after waiting a short while it bursts back in to life like nothing had happened, does anyone know what could be causing this or has anyone had a similar issue , all help appreciated In advance
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tristanh
Part of things
Routinely bewildered
Posts: 990 
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Could be your fuel pressure accumulator, thermotime unit, dirt getting into the fuel pickup pipe, or ignition amp. You'll have to try figure out if you have a spark when it happens.
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Whether you believe you can, or you cannot, you're probably right.
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ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
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mk1 golf playing up ChasR
@chasr
Club Retro Rides Member 170
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It could be a variety things with my K-Jet experience.
The most likely things could be.
-Rotor arm playing up.; This would result in no spark.
-Fuel pump relay playing up. I had this on my old XR3i and fuel pump relays were a common failure; we went through two relays over 60,000 miles and 3 years of owning car. All replacement units were secondhand relays. My dad despised the idea of paying £80 for a new relay when the car was worth £1k. I'm going back to the late 90s-00s however to put things into perspective.
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Last Edit: Nov 22, 2018 6:25:24 GMT by ChasR
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shin2chin
Part of things
Making curse word cars slightly better
Posts: 820
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My money would be on fuel accumulator. A new one sorted exactly the same issues I had with my 924.
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1977 PORSCHE 2.0na 924
1974 VW Beetle 1600
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ChasR
RR Helper
motivation
Posts: 10,191
Club RR Member Number: 170
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mk1 golf playing up ChasR
@chasr
Club Retro Rides Member 170
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Nov 23, 2018 13:04:48 GMT
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My money would be on fuel accumulator. A new one sorted exactly the same issues I had with my 924. Fuel accumulators are more for cold starting but do affect hot starting less IME. One way to see if it is the acculumator is iffy is to flick the ignition on and off about 5 times, leaving the ignition on for 3-5 seconds each of the 5 times. That will help account for a presssure drop. If it then fires up fine where it previously wouldn’t I’d then assume the accumulator is faulty. With the above test, I do assume fuel pump can be heard running when you go to ignition no.2. I can’t remember if my Escort RST on KE-Jetronic did this but the XR3i on K-Jetronic did and even my Mercedes with K-Jetronic style pumps does. My RST was a poor starter when left for a week. I would have to do the above for it to start first time cleanly. It would sometimes help with it being warm, but it was never a poor warm starter. When left for a while you could even hear the fuel pump drop in pitch quite dramatically when it reached the right pressure to run. |
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Last Edit: Nov 24, 2018 5:15:53 GMT by ChasR
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jpr1977
Club Retro Rides Member
Posts: 656
Club RR Member Number: 18
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mk1 golf playing up jpr1977
@jpr1977
Club Retro Rides Member 18
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Nov 23, 2018 14:16:12 GMT
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Agree with shin2chin sounds accumulator related but its a k-jet it could be all manner of things. Pm me your e-mail and i'll ping across a K-jet fault finding pdf guide i have from my mk1 days |
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Thanks jpr1977 I send you a pm
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Dec 14, 2018 10:32:36 GMT
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Did you get this fixed?
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Not yet toast, I need to look in to it as it starts ok on cold it's only after it warms up it does it, but then the other time I realised that if I play around under the fuse box it ends up starting up quicker, now to me it doesn't make sense as if it was a wiring issue then it wouldn't start from cold so I'm still looking in to it, I was told to open the screw on the back of the accumulator and if fuel dribbles out the diaphragm is shot so not holding pressure but I need to open it up to see this to eliminate it before checking out the fuse box side
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Mar 10, 2019 23:43:08 GMT
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Had a bit of time today so opened the screw at the back of the accumulator and had no fuel dribble out and then had it started and had it up to running temp , then switched it off and checked again but no fuel , even tho the accumulator had a slight incline I moved it about to see if anything would come out but it didn't so think Il have a look at the wiring side of the fuse box next |
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If it starts fine when cold but it takes ages to fire once the engine has a bit of temperature to it then my money is on the warm up regulator.
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Mar 12, 2019 10:32:40 GMT
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I agree, warm up regulator sounds like it might need looking at.
Trouble is with K-jet, so often people tune everything when the system is cold or already has a problem within it, and by doing so they just build problems into it.
The best thing to do is take each component and test it individually as per guides in workshop manuals (Haynes or Bentley). Get everything set to factory standard then if there is something that can't, focus on why and do not try to compensate or overcome that component.
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Mar 13, 2019 15:23:47 GMT
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Had a few guys tell me it could be the non return valve on the fuel pump giving and bit holding the pressure, but said to make sure you have to do a fuel pressure test hooked up to the warm up regulator, I had mine started to day on all 4 occasions first warmed up to running temp the switched off and let it sit for 20 mins came back to the car and it started ok so then let it warm up again to running temp and switched it off for 15 mins came back started it and it fired up again no issues I carried in with this pattern for 10 mins and 5 mins rest and each time if fired up so now I'm thinking what could it be as usually even a short stop at the petrol station and it refused to start or even a quick nip in to asda so now I'm bit confused what it is unless it's sulking lol
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