 A duh... Moment, Pinging from engine (predetonation?) |
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| 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. |
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| Bulldog9 |
May 2 2016, 10:20 PM
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#2
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Senior Member Group: Members Posts: 705 Joined: 21-August 13 From: United States Member No.: 16,283 Region Association: MidAtlantic Region |
Well, I can start you in the right direction, dump that wine down the drain and go get a beer.......... (IMG:style_emoticons/default/beer.gif)
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| Dtjaden |
May 2 2016, 11:29 PM
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#3
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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 |
QUOTE(Steve Pratel @ May 2 2016, 09:20 PM)  Well, I can start you in the right direction, dump that wine down the drain and go get a beer.......... (IMG:style_emoticons/default/beer.gif) I knew there was another issue (IMG:style_emoticons/default/headbang.gif) |
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| era vulgaris |
May 3 2016, 07:04 AM
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#4
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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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| r_towle |
May 3 2016, 09:44 AM
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#5
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Custom Member Group: Members Posts: 24,564 Joined: 9-January 03 From: Taxachusetts Member No.: 124 Region Association: North East States 
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Set it to three....three is the magic number.
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| walterolin |
May 3 2016, 09:58 AM
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#6
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Senior Member Group: Members Posts: 685 Joined: 30-November 11 From: Louisville, Ky Member No.: 13,838 Region Association: South East States |
QUOTE(r_towle @ May 3 2016, 11:44 AM) Set it to three....three is the magic number. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. |
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| era vulgaris |
May 3 2016, 10:34 AM
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#7
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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 |
QUOTE(walterolin @ May 3 2016, 11:58 AM) QUOTE(r_towle @ May 3 2016, 11:44 AM) Set it to three....three is the magic number. Three shall be the number thou shalt count, and the number of the counting shall be three. Four shalt thou not count, neither count thou two, excepting that thou then proceed to three. Five is right out. (IMG:style_emoticons/default/av-943.gif) (IMG:style_emoticons/default/clap.gif) Well played, sir! |
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