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A couple of months ago I changed the oil, plugs and filters on the wife’s car – which was the first time i’d ever done it to any car.
The whole process went as it should – no problems, but since doing all that it had an intermittent starting problem. Sometimes it would take 2-3 attempts to start, sometimes more, sometimes not at all.
At first I assumed it was something to do with what I had done, but couldn’t understand how as all i’d done is a basic service. I used the correct products and installed them correctly, but as it was my first time, I must have gone wrong somewhere.The first thing I tried was gapping the plugs – made no difference, then I put the old plugs back in – no difference.
After a few days of being annoyed with myself and earache off the wife I decided check things that I didn’t interfere with.
I found that there was an intermittent spark issue which I assumed was the coilpack, so I decided to replace.
Just before I ordered it my stepdad asked me if i’d checked the TDC sensor. It took some thinking but then realised that could be the problem. I took it out and sure enough it was dirty and covered in metal filings.
Since cleaning the sensor the car has run fine, like it did before the service.So I guess the moral of the story is – never assume.
At the time it was difficult not to assume and usually I wouldn’t, but it was running fine before so what ever I did, especially with it being my first time, must have caused the problem, right?
Never assume
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