Control Pressure Regulator or Warm Up Regulator question

[alphabob]

Hi, I'm new here, and new to VW's in general. FYI, I do have a general grasp of auto mechanics, (45 years of experience) so I do know which end of the screw driver to pound on. My daughter recently purchased a new (to her) 1984 Rabbit convertible. It was parked in the grass for a couple of years, so after spending an afternoon getting it running we were able to limp it home on two cylinders. Now that its in the garage the fun began. The ignition system is up and running and in good condition and the mouse condo was cleaned from the air filter box. Now we have spark at the right time and we have air but no, or not much, fuel. Cracking the lines open and cranking it over, fuel came out under good pressure from the lines. Now I made my way down to the control pressure regulator. Cracking the "out" side and cranking produced a goodly amount of fuel. On to the inlet. Cracked it open and cranked, and the thing fired up and ran great, or at least great compared to it not runnung at all. Started to snug up the line and it died. Cranked it over again and it wouldn't fire. Cracked the line open again and cranked it over and it ran again. Started to snug the line and it slowly died as I tightened it. Now that the engine, engine bay, left front fender, garage floor and myself are drenched in fuel, I'd like to know what gives. Sorry to ramble on like this, but I didn't want to skip anything. Any help would be greatly appreciated.

[briano1234]

Welcome to Cabbyhood..............

One site that I am going to recommend you book mark and read is www.cabby-info.com
Kammy has tons of stuff there. I am not a CIS person per say but I think you need to read about cleaning your airplate.

Owning a Bentley is another great piece of advice, and the last site you need to know is:
Neo+Bentley

Here is to havine a great cabby experience.

[alphabob]

Hey briano, Thanks for the response and the links. I clicked on them and gave them a brief once over - it looks like there is a wealth of information there. I'm familiar with the Bentley manuals having a mis-spent youth with British roadsters. Bentley was invaluable. Thanks again!

[jettncab]

Since the car sat for a long time, you'll want to clean the fuel distributor and airflow sensor plate.

You'll want to test the CPR too; it could be faulty, or it could be as simple as its filter screen being clogged.

You should also pull the injectors out and clean them too and to verify the fuel pressure/injector spray.

http://www.cabby-info.com/fuel.htm#CIS has directions for doing all of ^that.

Welcome to the topless world!

[James Seahill]

Hi, I'm new here, and new to VW's in general. FYI, I do have a general grasp of auto mechanics, (45 years of experience) so I do know which end of the screw driver to pound on. My daughter recently purchased a new (to her) 1984 Rabbit convertible. It was parked in the grass for a couple of years, so after spending an afternoon getting it running we were able to limp it home on two cylinders. Now that its in the garage the fun began. The ignition system is up and running and in good condition and the mouse condo was cleaned from the air filter box. Now we have spark at the right time and we have air but no, or not much, fuel. Cracking the lines open and cranking it over, fuel came out under good pressure from the lines. Now I made my way down to the control pressure regulator. Cracking the "out" side and cranking produced a goodly amount of fuel. On to the inlet. Cracked it open and cranked, and the thing fired up and ran great, or at least great compared to it not runnung at all. Started to snug up the line and it died. Cranked it over again and it wouldn't fire. Cracked the line open again and cranked it over and it ran again. Started to snug the line and it slowly died as I tightened it. Now that the engine, engine bay, left front fender, garage floor and myself are drenched in fuel, I'd like to know what gives. Sorry to ramble on like this, but I didn't want to skip anything. Any help would be greatly appreciated.

I have had the same problem you seem to with my '81 Rabbit Pickup. If you discover the solution please let me know. I have been able to run my engine fine with the inlet line to the CPR a little loose and leaking. When I've tried to tighten it with the engine running, it dies. I replaced most of my fuel system parts and even tried a different fuel distributor that had worked fine on another truck. I am thoroughly baffled about this.

[alphabob]

Hey James, yeah, it sounds exactly like ours. Now I don't feel so alone. I removed the fuel distributor yesterday, disassembled and cleaned it. Found nothing amiss, reassembled and installed. Same thing. Only now it's smoking like its running way rich. Tomorrow I'm going to just bypass the CPR altogether and see what happens. If there's no change I'll remove the CPR and see what's going on there. Trying to do it orderly and one step at a time. I'll keep you posted.

[1984 rabbit]

I'm new here but I recently bought a 1984 rabbit and I'm having the same problem I was told that the car needed a fuel pump when I bought it I changed the pump and filter checked the timing belt every thing seems right just wondering if you figured it out