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Keane165's 1970 LeMans

2022 June
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Missing shortly after takeoff


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So often shortly after takeoff my 08 wave will start missing alot. The check engine light will turn on and start flashing usually. it doesn't last long and then it works normally. Iv'e have it scanned with a small scanner and nothing comes up.

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22 minutes ago, mdrake said:

So often shortly after takeoff my 08 wave will start missing alot. The check engine light will turn on and start flashing usually. it doesn't last long and then it works normally. Iv'e have it scanned with a small scanner and nothing comes up.

Not much to go on, but first take it to a place that has a good scanner that will be able to see insitu data as well as past codes etc...

My best guess is fuel! How many miles? How often have you used fuel injector cleaner, what kind of cleaner? What kind of gas? All gas is not created equal irrelevant of what you’ve been told! Quite often clogged or deposit riddled injectors don’t show up as a code or even a problem on a scanner, but will wreak havoc on performance, up to and including miss fires!

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5 hours ago, mdrake said:

It has 230000 km on it now. The injectors have never been clean. It only happens after startup though for maybe 20 or so seconds and never again, seems odd. Would it not happen at all times if it was fuel related?

Every startup? Only cold startup, only hot startup?

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3 hours ago, mdrake said:

Not every startup but very often. Always cold startup

Sounds like one of two possibilities or both. A bad fuel filter, and or injectors that have heavy deposits. If you have never replaced the fuel filter, I would! Then get yourself several bottles of Gumout Regane, this is as good of a fuel injector/upper end induction system cleaner as there is. Add one bottle with a fill up and do that at least 4 times. If there is no improvement let us know what occurred and we’ll go from there.

Edited by Last Indian
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