Help Support Bigcoupe.com

Engine Flooding when turned over 1988 m6

Post here for mechanical and engine topics such as fuel issues, transmission problems, rough idle, exhaust, electrical issues, etc

Moderators: ron, bfons, GRNSHRK

Post Reply
88m6shark
Posts: 3
Joined: Wed Jun 12, 2019 9:55 pm
Location: California

Engine Flooding when turned over 1988 m6

Post by 88m6shark » Mon Feb 10, 2020 9:23 pm

So recently replaced fuel pumps. When the car sits for a day, it will not start up right away. Once i've cranked it over, it smells of gasoline flooding the engine, making it even harder to start. When it does start, no problem restarting it. But once it has flooded, there's no fire. I was told it could be a couple things. 1. ECU is failing, causing the fuel pumps to stay on. 2. Could be a short.

I'm no expert, so any guidance would be helpful.

bakemono
Posts: 42
Joined: Mon Oct 28, 2013 7:23 am
Location: NY, USA
Contact:

Re: Engine Flooding when turned over 1988 m6

Post by bakemono » Tue Feb 11, 2020 10:03 am

Could be a bad temp sensor causing the ECU to inject too much fuel. Or injectors leaking. Just a couple of ideas.

Does the M6 have a cold-start valve? That could be another culprit.
'82 528e - M50B25 + GS6-37BZ
'83 633CSi - Megasquirt and a 3.46LSD

88m6shark
Posts: 3
Joined: Wed Jun 12, 2019 9:55 pm
Location: California

Re: Engine Flooding when turned over 1988 m6

Post by 88m6shark » Tue Feb 11, 2020 6:24 pm

bakemono wrote:
Tue Feb 11, 2020 10:03 am
Could be a bad temp sensor causing the ECU to inject too much fuel. Or injectors leaking. Just a couple of ideas.

Does the M6 have a cold-start valve? That could be another culprit.
I don't believe the 88 m6s have a cold start valve. I'll check on the temp sensor. Appreciate the feedback.

marc79euro645
Posts: 2
Joined: Tue Feb 11, 2020 12:31 am
Location: pensacola

Re: Engine Flooding when turned over 1988 m6

Post by marc79euro645 » Thu Feb 13, 2020 3:04 am

Could be a leaking fuel pressure regulator. If the diaphragm has a leak, it will suck fuel into intake.

Post Reply

Who is online

Users browsing this forum: No registered users and 3 guests