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Thread: Hot start/running problems

  1. #11
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    I thought The Bosch pump was £58.00 or around that price Sean ?. I’ve been looking into getting one as well .

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

  2. #12
    CF-oholic! seanl82's Avatar
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    Even better Rob! I don't really know how they're made up but I think the in tank unit is made up of a few parts from what I remember. The pump itself sits in a housing which is mounted on rubber feet from what I remember. I've heard that these break down so the pump rolls around a bit which has caused cutting out issues when cornering for some. I need to investigate a bit more to see what is going on. My tank isn't connected but I strapped it back on to the underside for transportation when I moved house. We will be finished with the house renovation by Summer so I can put some time into the poor girl then!
    95 Classic Green VR6 - Jetex Cat Back|BMC CDA|VT mounts|Bilstein B12s|288mm front brakes|Mk4 Rears|Braided hoses|Daves16v shortshifter|Lupo wipers|Uprated headlight loom|
    http://the-corrado.net/showthread.php?t=79984
    CCGB #3982

  3. #13
    Enthusiast pfnsht's Avatar
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    Maff - great you got your car sorted. I was having some warm start issues but installed a one way valve near the pump, renewed the pump relay and installed a new fuel filler cap (just because mine was manky and it was £8quid) and it's fixed for now.

    Anyone got part numbers or links for these pump though? I thought VR pumps were uber expensive (£350+ ) and hard to source. What's the difference betweens ones sold in a case and others that look like they are without a case?

    Thanks,
    Matt
    1995 White VR6 CCGB Member 4303
    263 Cams & head refurb | 220 BHP Stealth remap| Miltek non res | Bilstein B12 | R32 Wishbone bushes | VT Mount

  4. #14
    The fuel pump is in two parts, the swirl pot and float for level sensor and top cap, the fuel pump then slides into the top of the unit which then fits into and up stems in the bottom of the tank.
    So if your seeing a fuel pump for 30-£50 then itís just fuel pump itself, i bought the complete unit as when we removed it from the tank all the seals were perished.

    Iíve got videos of the pressure gauge teed into the fuel feed line which clearly shows how bad pressure was on the old pump dropping to 0.5 bar when revved and then when the new pump installed at idle sits at 3.5 bar and when revved increases to near 4 bar.

    Ill try to post up pics and part numbers when i can if anyone needs them.
    I got the complete unit from gsf in the end for £71 whereas others were coming in at £250-180, £130 etc, pays to shop around!

    Going for a spin in the car tonight, canít wait.

  5. #15
    Enthusiast pfnsht's Avatar
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    Thanks Maff for the info - itís cleared it up a treat for me! Enjoy the spin

  6. #16
    CF Nutter fendervg's Avatar
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    There are early and late type pump units (Pierburg vs VDO)as well and you may need to change the fuel gauges sender assembly when swapping over. And watch out for fuel pump units for 2.8 VR6 engines like in the Golf, which are rated at 3 bar whereas the Corrado unit is 4 bar.
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  7. #17
    ⋆⋆ CF Donator ⋆⋆ robrado974's Avatar
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    Quote Originally Posted by seanl82 View Post
    Even better Rob! I don't really know how they're made up but I think the in tank unit is made up of a few parts from what I remember. The pump itself sits in a housing which is mounted on rubber feet from what I remember. I've heard that these break down so the pump rolls around a bit which has caused cutting out issues when cornering for some. I need to investigate a bit more to see what is going on. My tank isn't connected but I strapped it back on to the underside for transportation when I moved house. We will be finished with the house renovation by Summer so I can put some time into the poor girl then!
    This could be what’s wrong with mine Sean . It does happen on corners. I’m going through a non interest stage at the moment. I’m doing bits but when I feel like it . Maybe it’s the weather lol .

    92 VR6 . DBP. She will never be a show car ..... But will be up there with the best of em .

    The bmw seems invincible in isolation . But along side the corrado - a modern classic , we think- it has its work cut out . Autocar 1992.

  8. #18
    CF Nutter fendervg's Avatar
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    The 3 bar pumps from the Golf VR seem to be a lot cheaper and more available - I often wonder if it would be possible to run a 3 bar one on a 2.9 ABV engine instead of the 4 bar one, and would you need to change the FPR to 3 bar to match as well? It's kind of tempting because I can buy a complete Pierburg OE fuel delivery unit with cap and sender unit for the same price as just a 4 bar pump unit.
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  9. #19
    CF-oholic! seanl82's Avatar
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    I reckon you probably could. The amount of 2.8 lumps with all ancilliaries including FPR that were originally attached to a 2.9 are plentiful, and although its the other way around there have never been reports of any issues. I've seen plenty of 2.9 lumps in Golf VRs as well and don't think any of that has been changed. They see it as a bit of an upgrade, although the inlet manifold will be just as effective as the entire engine with regard to power!
    95 Classic Green VR6 - Jetex Cat Back|BMC CDA|VT mounts|Bilstein B12s|288mm front brakes|Mk4 Rears|Braided hoses|Daves16v shortshifter|Lupo wipers|Uprated headlight loom|
    http://the-corrado.net/showthread.php?t=79984
    CCGB #3982

  10. #20
    Enthusiast pfnsht's Avatar
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    How come VW went to the effort to stick a different fuelling system in the Corrado? Was it to do with the schrick inlet (read they might have been built stock with them at one point).

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