A duh... Moment, Pinging from engine (predetonation?) |
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A duh... Moment, Pinging from engine (predetonation?) |
Dtjaden |
May 2 2016, 08:07 PM
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#1
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Member Group: Members Posts: 232 Joined: 25-May 13 From: Morgan Hill, CA Member No.: 15,915 Region Association: Northern California |
I've been working the last few days getting my car ready for the WCR after it has had a few months winter rest. Some background: the engine is a 2056 with Megasquirt engine management, ignition and fuel injection.
Just before I put it to bed for the winter installed a cam position sensor, thanks to Mario at the Dub Shop. With the cam sensor I changed the ECU from semi-sequential FI to sequential and ignition from wasted spark to fully sequential. Today during a short drive I noticed engine was pinging under load. I tried backing of the advance a few degrees but that did not eliminate the problem. So the next step was to check the timing. I have an Innova variable timing light and it works correctly with wasted spark by setting the cylinder count to 2. Sitting here with a glass of wine (IMG:style_emoticons/default/beer3.gif) I just realized that the 2 cylinder setting on the timing light would result in the actual advance being twice as much as I thought...duh. I'll be back at it tomorrow to correctly set the timing and hopefully eliminate the engine's pinging. |
era vulgaris |
May 3 2016, 07:04 AM
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#2
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J is for Genius Group: Members Posts: 982 Joined: 10-November 13 From: Raleigh, NC Member No.: 16,629 Region Association: South East States |
Nah man, give me the wine and then go get a beer. And while you're at it grab me a beer too. (IMG:style_emoticons/default/beer3.gif)
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