[T2] Power loss in 4th

[Avocado Tom Tarka]

John,

Pulled two plugs: both look great.

Switched to high test gas on the last fill up and no change. If anything, the problem got worse.

Re-checking the valves next but they were fine when I last checked (~30 miles ago)

Blowing out the fuel line next.

Keep the ideas coming!

Cheers,
   Tom

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> On Oct 21, 2015, at 6:10 PM, John Rogers <arathorn.rogers at gmail.com> wrote:
> 
> I am still convinced until proven otherwise that this is a case of
> pre-ignition. It has all the symptoms -- starts fine, runs OK until warm,
> then loss of power. Pre-ignition usually occurs in two ways -- one, an
> extremely hot engine, i.e. valves glowing red hot, etc, or, two, carbon
> buildup that begins to glow enough to pre-ignite the fuel mixture after the
> engine is warm. This results in at least one cylinder fighting against the
> rest of the engine, robbing it of power. The fuel starvation theory  imho
> doesn't hold water. With a carbureted engine you have fuel in the bowl or
> you don't. That the level in the bowl would be so low that just wispy drops
> are sucked  through the jet is hard to imagine. And if this were to be the
> case the engine would stutter rather than run with less power, as anyone
> who has run out of gas knows. I would start by looking at the plugs. If
> there is carbon buildup it will show on the plugs and it may just be
> possible cleaning and reinstalling them might fix the problem. High test
> gas is also less prone to pre-ignition.
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