Question about 1986 Porsche 944

1 Answer

944 fuel problems

1986 944 auto was running fine parked up and it would not start the following day.
have replaced the dme still no joy
checked dizzi cap plugs rota
now here is where i get confused took cap off the end off the fuel rail to try and gauge the fuel flow connected hose to end and ran to a fuel can turned the engine over to get the fuel pumping and low and behold the engine fired up but would only tick over as soon as the throttle is presseed the engine died,replaced the fuel rail cap and the car will not start.

any help or thoughts on this one would be great



Posted by on


1 Answer

  • Level 1:

    An expert who has achieved level 1.


    An expert whose answer got voted for 2 times.

  • Contributor
  • 1 Answer

If the fuel pressure regulator is stuck there will be to much pressure to the injectors and the injectors won't open, and thus no start. Since you relived the pressure by lossening the cap the engine ran.

Posted on May 08, 2009


1 Suggested Answer

  • 2 Answers

SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

A 6ya expert can help you resolve that issue over the phone in a minute or two.
Best thing about this new service is that you are never placed on hold and get to talk to real repairmen in the US.
The service is completely free and covers almost anything you can think of (from cars to computers, handyman, and even drones).
click here to download the app (for users in the US for now) and get all the help you need.
Good luck!

Posted on Jan 02, 2017


Add Your Answer

Uploading: 0%


Complete. Click "Add" to insert your video. Add



Related Questions:

1 Answer

Cranks over. But wont start.

Pull the injectors and have them tested for electronic continuity and spray pattern as the needle may be rusted up or the coils in the injectors corroded away for the long period of no use. Regardless of what engine you have if you have spark at the correct time --compression --fuel then you must have go in the engine . Continuing to run will depend on the make and design as the other variables come into play.

Nov 16, 2013 | 1986 Porsche 944

1 Answer

1986 porche 944 turbo has no spark coil is fine and ran a jumper wire from the battery to the coil still didnt get any spark

hello there
it is possible that you need DME control relay.It costs about 20$


Feb 18, 2013 | 1986 Porsche 944

1 Answer

86 porsche 944, starts n runs, while driving at higher rpms, car cuts right off, i start it back up n it runs funky, now last time it did it i pulled dme relay, and puty it right back in and the car ran...

I would buy a used one if you can (dme chip). Have you cleaned the fuel injectors? one could be faulty and could be a coincidence about the car working better after taking the relay out and putting back in. could be a bad cpu also. would love to hear what happened if you get it fixed. good luck

Aug 07, 2010 | 1986 Porsche 944

1 Answer

Where is the DME on a porshe 911 1986 my cat turnes over but wont start - could it be the DME

that sounds like a fuel pump or fuel line blocked bro. good luck. doubt the dme

Jul 17, 2010 | 1986 Porsche 944

1 Answer

I`ve a 1986 porsche 944 turbo.i`ve replaced both crankshaft sensors,dissy cap and DME relay as it would not the car does start but not very well,chucking out black smoke,hesitates when you press...

to me could be a gasket problem if you are blowing smoke when applying gas. just a suggestion. have you checked the oil? to see if milky? keep me informed please. Thanks.

Jul 16, 2010 | 1986 Porsche 944

1 Answer

Porsche 944 late ?85 early ?86 Please help if you can. The car is my only one, at the moment, and I need to get it running fast. The car has never given me any trouble, though it has only done 3K miles in...

ok, your problem is your fuel. your carborator cannot sit that long with fuel in it. try getting a can of carb cleaner and spray it while its running, or have a mechanich clean it if you don't know how.

Feb 24, 2010 | 1986 Porsche 944

1 Answer

Engine dies after a time

it is the dme relay. it has a bad connection. very common problem. you can test this by making a jumper cable from the numbered position on the relay. make a y cable with each end having a male connection. plug each end into the slots numbered 30 78 78b. but this will drain the battery if left as a long term fix.

Apr 25, 2009 | 1986 Porsche 944

1 Answer

944 cuts off after 5 min.

Sounds like fuel relay located in fuse/relay box. This is a common problem on the 944, always good idea to carry a spare.

Feb 11, 2009 | 1986 Porsche 944

Not finding what you are looking for?
Cars & Trucks Logo

Related Topics:

1,022 people viewed this question

Ask a Question

Usually answered in minutes!

Top Porsche Experts

Colin Stickland
Colin Stickland

Level 3 Expert

22326 Answers


Level 3 Expert

917 Answers


Level 3 Expert

78238 Answers

Are you a Porsche Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides