FRAMING JOHN DELOREAN - ON VOD www.framingjohndeloreanfilm.com
Page 7 of 7 FirstFirst ... 5 6 7
Results 61 to 63 of 63

Thread: High idle troubleshooting

  1. #61
    Senior Member
    Join Date:  May 2013

    Posts:    125

    I had something similar with mine. During winter it would fire immediately and then die. Try again and hold the gas down to keep the revs up for 30 secs or so then it would stay running on its own.

    Turned out the CPR was massively over leaning, but the only way to know this is a fuel pressure testing kit for k jet. Stethoscope for D owners!

    I know it looks and smells like it's running rich but the fuel pressure gauge will reveal a lot. Has your car sat for a long time at some point without being properly sorted?

    When I got my car it had sat for a while, but it ran ok and started instantly, except during the winter when it would die straight away unless you held the throttle open for 30 secs or so. Took me 18 months to get there but every part of the the fuelling was wrong, except the distributor.

    If your car has sat for ages, with hindsight from my limited ! experience, strip all of the fuelling out and have it rebuilt, you'll probably need new injectors, check the electrics to the fuel pump., to make sure it's getting the power it needs under an 8 amp load.

  2. #62
    Senior Member Trstno1's Avatar
    Join Date:  Aug 2014

    Location:  Anchorage, Alaska

    Posts:    847

    My VIN:    5625

    Quote Originally Posted by Horsebox View Post
    I had something similar with mine. During winter it would fire immediately and then die. Try again and hold the gas down to keep the revs up for 30 secs or so then it would stay running on its own.

    Turned out the CPR was massively over leaning, but the only way to know this is a fuel pressure testing kit for k jet. Stethoscope for D owners!

    I know it looks and smells like it's running rich but the fuel pressure gauge will reveal a lot. Has your car sat for a long time at some point without being properly sorted?

    When I got my car it had sat for a while, but it ran ok and started instantly, except during the winter when it would die straight away unless you held the throttle open for 30 secs or so. Took me 18 months to get there but every part of the the fuelling was wrong, except the distributor.

    If your car has sat for ages, with hindsight from my limited ! experience, strip all of the fuelling out and have it rebuilt, you'll probably need new injectors, check the electrics to the fuel pump., to make sure it's getting the power it needs under an 8 amp load.
    Where and how do you hook up a fuel pressure gauge? That sounds like that may be the next step. When I purchased my car, the PO stated that he didnt drive it much but started it fairly consistently in order to make sure the fuel never got stale. But who know really right? How did you fix the CPR massively over leaning? Replace it?
    You can't buy happiness, but you can buy a DeLorean and that's sort of the same thing....

  3. #63
    Senior Member
    Join Date:  May 2013

    Posts:    125

    I'm pretty sure from memory the gauge sits between the return line from the CPR and the distributor. It has a valve that you can shut off to eliminate the control pressure so you are then reading primary pressure. Any pressure testing kit you buy will have instructions, it's not hard. Just don't start undoing banjo bolts with fuel under residual pressure and a hot engine!

    Yeah the CPR has a spring in it, which had broken, so I sent the whole thing to a specialist and it came back like new.

    Fuelling seems to be the biggest problem with these cars, as many have sat for months or years. I know you don't want to hear it but to sort it once and for all start at the tank, pull everything out, clean the tank, then deal with the fuel injection components. Otherwise you can fix broken components only to pollute them with dirty fuel.

Page 7 of 7 FirstFirst ... 5 6 7

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •