I noticed a sensor on the driver's-side camshaft, and also a sensor behind the crankshaft sprocket.
I've been told that with these sensors, and also a knock sensor somewhere, the computer can compare all that data - along with fuel injector pulses for each cylinder - and figure out a lot.
I tore it back apart last night (took less then half an hour). I will repost today if I fix it. It appears that the right-cam is one tooth off and left cam is fine. This because the timing marks on the belt are incorrect. The cam that is one tooth off runs on cylinders #1 and #3 - the ones that now give an error code as "misfiring."
Right now - the issue seems to be mis-information. From all I can tell, the tooth count on the timing belt on the SOHC 2.5 is different from other similar engines (like 2.2s) - and the info is wrong in the factory service manual. Subsequently, new aftermarket timing belts are marked wrong.
I did a lot of searching and finally found two people who had the exact same problem. So, I took the original belt and examined with a magnifying glass. Sure enough, I found the old OEM timing marks and they do NOT match the new belt.
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Today's Featured Article - Restoration Story: Fordson Major - by Anthony West. George bought his Fordson Major from a an implement sale about 18 years ago for £200.00 (UK). There is no known history regarding its origins or what service it had done, but the following work was undertaken alone to bring it up to show standard. From the engine number, it was found that this Major was produced late 1946. It was almost complete but had various parts that would definitely need replacing.
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