Guided Diagnosis
Lack of power / poor performance
"It's got no power" describes what you've noticed, but it doesn't tell us what has failed. Before looking for a component to blame, let's gather some useful information about exactly when the problem happens.
The first diagnostic tool is information
The circumstances around a fault can be a clue.
Cold, hot, uphill, after twenty minutes, after refuelling or only with a heavily loaded vehicle — details like these can help decide what information is worth looking at next.
Step 1 of 5
When does the problem happen?
Select everything you've noticed. Don't worry about deciding what it means yet — at this stage we're simply gathering clues.
Select everything that applies.
You can choose more than one. Real faults rarely fit neatly into one box.