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Engine Specific Info and Questions => IDI Engine => Topic started by: molgrips on November 02, 2008, 08:18:29 am
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I tried setting the injection timing a while ago, but I didn't have the screw-in adapter so I used a magnetic clamp stand like you'd use in a metal workshop. It sort of worked, so I thought. The car ran fine except it's been a bit buzzy and noisy at speed, and with the cold start handle out it sounded quite rattly. I thought that was just how it was with the handle out..
Well, I just checked it now, and it was almost 1.0mm, and I thought I'd set it to a conservative 0.92mm! I put it back to 0.94mm based on people's views on here, and the fact I'm running veg - albeit thinned.
The car's way smoother all through the rev range, and nicer to drive in general. For some reason I can now feel the governer coming in at about 3.5-4rpm - time for another mod I think.
The thing is, I'm after smoothness in driving and economy rather than power (yes, I know I'm an interloper on this forum) so would it benefit from more retarding perhaps? It's still not totally smooth at speed.
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retarding will make it less efficient, advancing timing will help MPG, to a point.
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I suspect my injectors though - if they are weak that'll have an advancing effect, right? Must get them rebuilt.
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I think so, but a worn pump will have a retarding effect so it could be a wash.