FUEL ISSUES

1999 Ford Explorer

Tiny

rmoore09

July, 14, 2012 AT 6:23 AM

Hello, the engine is knocking like it has an octane problem. Also, it has a really rough start when starting cold as well. It will start up fine when warmed up. It seems to have no driving issues although it seems like its runs rough when taking off. There is no check engine light and the fuel filter has been replaced. The injectors have also been cleaned. Any ideas?

FOUND 16895 RELATED QUESTIONS

3 Answers

Tiny

rmoore09

July, 14, 2012 AT 6:24 AM

Also the MPG has not been affected.

Tiny

Wrenchtech

July, 14, 2012 AT 1:11 PM

Take a fuel pressure measurement and post what you find.

Tiny

djcl

July, 15, 2012 AT 1:52 AM

A quick thing to try is to remove and maf sensor and clean the thin wire with cleaner

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