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supercoach24 Offline
#1 Posted : Monday, 21 September 2020 12:12:07 PM(UTC)
supercoach24

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Joined: 15/07/2018(UTC)
Posts: 18
Australia
Location: Adelaide

Hi guys, I have a question as I am stumped as to what is going on. Vehicle is a HT 253 V8 Manual running standard WW Stromberg 2 barrel carby.

I had to take off my original AC fuel pump as diaphragm was leaking oil and sent it off to get fixed. So I bought and installed a Goss Fuel Pump (G25308A) to get by until then (as I have Bay to Birdwood this coming weekend) and had to bend the bundy tube to accommodate it. I also had a leak where the tube connects to the fuel pump but have managed to get it down to a weep ( I can’t eliminate completely)

Ever since then I have been having issues starting the car when the engine is hot/warm. It’s like I have fuel starvation. No issues on cold start up with the choke though and no issues when driving (although there is a slight jerkiness when trying to accelerate hard from 2nd gear when going around a roundabout )

I go to start the engine as per normal when warm/hot which is press pedal down about 1/3 of the way and crank the engine and normally engine will fire after 2-3 seconds. What is happening since I did the pump swap is the engine is cranking for at least 10 seconds before anything happens, it then splutters to life only to stall straight away.

I got a second pair of eyes to look down the carby when hot to see what happens when I press the pedal and I am getting not fuel spraying into carby on the first stroke of the pedal, if I press pedal again (towards the end of the stroke nearing the floor) I then get a tiny bit of spray and then the rest of the fuel just dribbles into the carby. I get nothing at the beginning of the pedal like I do when the carby is cold and I have fuel spraying into carby straight away without delay.

I have removed the fuel connection at the carby to make sure nothing is blocking the needle to the float and it is all clean and as it should be. I guess the test will be when I get my original pump back whether this will still do it, but given I have Bay to Birdwood this coming weekend I am trying to sort this out so I don’t get stuck somewhere cos I can’t restart my hot engine.

According to the Goss specs this fuel pump is 7PSI where as the AC one is started to be 4.5-5.75PSI. Would that be causing me issues by forcing too much fuel into the carby?
Oily Offline
#2 Posted : Wednesday, 23 September 2020 12:25:13 AM(UTC)
Oily

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Hi Super
later fuel filters (before the carby) had a bleed off line back to the tank eg Hz with Air conditioning metal or valiants had the plastic Ryco style. These you may be able to feed back into a tee piece in the supply line. I may have dreamt it ! but your predicament reminded me of a fix tried on 308's with heat soak from too high a pressure which was to drill a 20 thou hole in a secret location in the pump. Never saw a bulletin for this, remember it could have been a dream. My boss was old school every new problem had a fix learnt from the old chev 4 days.
Good luck 🤞
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