1980 Porsche 928 won't start?

Asked by Jan 10, 2011 at 04:16 PM about the 1980 Porsche 928

Question type: Maintenance & Repair

I have a 1980 Porsche 928 and can't get the car to start. I have replaced the fuel pump, cleaned and reinstalled the fuel injectors and replaced the injector hoses with new ones. I also have replaced the starter and have a freshly charged battery. If I spray starting fluid in it it starts up, runs for a few seconds or so than dies. I checked the fuel pump pressure from the pump to the injectors and have good pressure. What other areas should I be checking? Even though I have good pressure to the injectors how can I tell if the gas is reaching the plugs? Since the car fires when I spray starting fluid and I have checked for spark what else could it be?

3 Answers

775

I had a similar issue with my Chrysler Lebaron once I'll tell you what I did and you can try it, but it might have just been luck that fixed it. I put gas in a spray bottle and opened up the air cleaner and had my wife turn it over to start the car while I worked the throttle and sprayed fuel into it. I fueled the crap out of it with the throttle plate wide open and after awhile it started running on its own. I think it had water in the injectors and they couldn't open far enough to clean it out until I had the car running at WOT. It was hard to start for the next couple times and I had to hold it half throttle to get it to start, but after a tank of fresh gas it started running good again.

1 of 1 people found this helpful.
50

if you want the answear to your problem with your 928 email me at rayhaikkala@hotmail. com I am a asc certified mechanic 28 years

5 of 5 people found this helpful.

Replace your fuel injector relay. Same relay as your horn. Switch them. Your injectors are not getting power, hence no gas. Your cold start injector sprays a small amount of gas to help car start but it's just a squirt, that's why it dies.

Your Answer

928

Looking for a Used 928 in your area?

CarGurus has 32 nationwide 928 listings and the tools to find you a great deal.

ZIP:

Porsche 928 Experts

  • #1
    Tom Demyan
    Reputation
    130
  • #2
    MTA1968
    Reputation
    120
  • #3
    Michael Griffin
    Reputation
    100
View All

Related Models For Sale

Used Porsche 911
126 Great Deals out of 4,974 listings starting at $8,900
Used Chevrolet Corvette
290 Great Deals out of 20,736 listings starting at $2,990
Used Porsche 924
8 listings
Used Ford Mustang
709 Great Deals out of 38,398 listings starting at $895
Used Mercedes-Benz SL-Class
66 Great Deals out of 2,887 listings starting at $4,500

Used Cars For Sale

Content submitted by Users is not endorsed by CarGurus, does not express the opinions of CarGurus, and should not be considered reviewed, screened, or approved by CarGurus. Please refer to CarGurus Terms of Use.