Engine flooding

JONES ALMOND

MEMBER
1989 FORD BRONCO
140,000 MILES

After being driven and reaches operating temperature regardless of time it was driven, and turn off engine it is hard to start after fifteen to thirty. The only way to get it started again is to push accelerator to the floor and hold. I understand this signals computer to not inject gas.I don't know if there is any connection but the idling rpm fluctuate.

5 Replies

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

This sounds like one of the injectors is shorting out which will cause the injector to go full on and flood the engine. Lets run the codes and test each injector. Here are two guides to help us get started:

https://www.2carpros.com/articles/how-to-test-a-fuel-injector

and

https://www.2carpros.com/articles/ford-lincoln-mercury-obd1-1995-and-earlier-diagnostic-trouble-code-definition-and-retrieval

Please run down these guides and report back.

Cheers, Ken

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Saturday, December 15th, 2018 AT 10:47 AM

JONES ALMOND

MEMBER
4 POSTS

Ken, thanks for your reply. Once an injector shorts out, does it stay shorted or can it be an intermittent problem?

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Wednesday, December 26th, 2018 AT 5:34 PM

KEN L

MASTER CERTIFIED MECHANIC
47,702 POSTS

It can be intermittent.

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Thursday, December 27th, 2018 AT 5:13 PM

JONES ALMOND

MEMBER
4 POSTS

Thanks for last reply. On 8/15/'18 when it was towed to an independent garage they replaced two injectors. I will have to ask if they checked the others for shorting. It is difficult to check the others and does it take special equipment?

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Friday, December 28th, 2018 AT 12:52 PM

KEN L