 Way too much gas, 73 1.7 with FI |
|
|
|
Porsche, and the Porsche crest are registered trademarks of Dr. Ing. h.c. F. Porsche AG.
This site is not affiliated with Porsche in any way. Its only purpose is to provide an online forum for car enthusiasts. All other trademarks are property of their respective owners. |
|
|
| EJP914 |
 Jun 24 2026, 09:10 AM
Post
#1
|
|
Member  Group: Members Posts: 295 Joined: 14-June 03 From: Monroeville, PA Member No.: 821  |
hello!
Looking for some ideas on why the spark plug electrodes are wet with gas after running the car for only about 20-30 seconds. Something is causing way too much fuel into the engine. Car starts at the turn of the key, but stumbles and runs rough. Exhaust smells like gasoline. I have checked, replaced, or installed known good parts. New plugs, points, condenser. Cleaned trigger contacts. Distributer other wise works as it should. Swapped in known good relay board and relays Swapped in known good ECU. Installed new fuel injectors, Standard Mfg type. Fuel line pressure at 25 lbs. Swapped in “adjusted” MPS. (Maybe still too rich?) Timing is good but not spot on. I have not yet checked CHT sensor or cold start valve (may be stuck open?). Not sure what else to check? I have never seen this much gas get pumped into an engine. I would very much appreciate any advice and/or guidance. Thanks. EJP914 |
   |
 
|
  |
Replies
| emerygt350 |
Jun 24 2026, 10:08 AM
Post
#2
|
|
Advanced Member Group: Members Posts: 3,646 Joined: 20-July 21 From: Upstate, NY Member No.: 25,740 Region Association: North East States |
Check you cht just in case. Easy peasy. Then check your mps. I am betting it doesn't hold vacuum.
|
|
|
|
Posts in this topic
EJP914 Way too much gas Jun 24 2026, 09:10 AM
FlacaProductions I'd check the cold start valve. Jun 24 2026, 09:13 AM brant CHT and mps failure both cause excessive rich cond... Jun 24 2026, 09:43 AM JamesM
Swapped in “adjusted” MPS. (Maybe still too ... Jun 24 2026, 09:43 AM
burton73 I don't know why your car is pumping too much ... Jun 24 2026, 10:30 AM emerygt350
I don't know why your car is pumping too much... Jun 24 2026, 02:01 PM |
5 User(s) are reading this topic (3 Guests and 0 Anonymous Users)
2 Members: TRP, Olympic 914
|
Lo-Fi Version | Time is now: 24th June 2026 - 03:13 PM |
Invision Power Board
v9.1.4 © 2026 IPS, Inc.