Mondeo 1.8 Pinking

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Sun 13 Jan 2002 13:39
Mondeo 1.8 Pinking - Keith
Further to a thread in the past my 99 Mondeo 1.8 is still pinking on normal unleaded (fine on optimax)

I have replaced the plugs and HT leads, ran three doses of VAG fuel additive through the system and reset the ecu by disconnecting the battery for half a day.

Incidentally, since disconnecting the battery and resetting the ECU the pinking seems to be worse (I might be imagining it though.)

The pinking occurs mainly at 30mph in fourth gear when I floor the throttle.

Any ideas what to try next? Any help gratefully received.
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Sun 13 Jan 2002 21:46
Re: Mondeo 1.8 Pinking - Albert
Have the timing checked at the ford dealer,checking is a straight plugin computer job i would expect
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Mon 14 Jan 2002 14:32
Re: Mondeo 1.8 Pinking - Alan
I would think it normal for most cars to pink when you floor the accelerator in 4th.
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Mon 14 Jan 2002 17:24
Re: Mondeo 1.8 Pinking - Keith
I think the timing is non adjustable and no car should pink in my experience. But thanks for the replies.
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Mon 14 Jan 2002 20:05
Re: Mondeo 1.8 Pinking - Andrew Moorey (Tune-Up Ltd.)
Check what octane rating the ECU is set for. There is a little plug in resistor (grey) near the servo, check it is there and the correct one for 91 octane from your Ford dealer.
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Wed 16 Jan 2002 20:18
Re: Mondeo 1.8 Pinking - Keith
Thanks Andrew, but I am a little confused.

Should it be 95 ron for normal unleaded?
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