Quote:
Originally Posted by aersloat
I had a annoying loss of power issue that was worst when heading uphill or at full load. Took me forever to figure out what the issue was. It turned out to be a damaged and improperly installed vacuum shutoff actuator on the injection pump. Under load the actuator was choking off fuel delivery. Probably not what your issue is, but it is easy to check. Watch the shutoff lever while the engine is running. If it sticks pretty much straight up and does not bob up and down you are probably fine. If it bobs up and down and moves down when the accelerator is pressed then it could be an issue.
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good idea. And you can disconnect the vacuum hose to it to be sure its not getting vacuum.
also when you open your gas cap, does it have a big whoosh sound like sucking in air? if so you fuel tank vent might be clogged.
Trying to think what is happening after a 30 minutes of driving causing the low power. Extra suction on shut off valve sounds plausible but that would mean your ignition switch is allowing vacuum through to the shutoff valve or something like that.
First thing i do with low power issues on these is pull the alda and throw it away in the tool box (anybody need an alda , pm me
) . But usually the low power is when cold and gets better when warm if it is the alda. That was case on my 87 wagon. It was a slug when it first started up in the morning then a minute down the road it was better. Now with the alda off it takes off right after it starts.