Nug

Dieseling. Yeah, it's embarrassing. The cause is simple. There is something in the combustion chamber that is hot enough to act like a spark plug, igniting fuel even with no spark. Usually, carbon in the combustion chamber does it, but sometimes it's something like the spark plugs' ground electrode. Especially if they are worn and the electrode is real thin. Without going to the root problem, you might be able to keep it down by changing the plugs (if it hasn't been done in a while), or by running a top cleaner. You can use sea foam, I know that GM makes a superb top cleaner. There are other aftermarket brands. Basically, you take the air cleaner off, pour this stuff in slowly while keeping the engine running, and then just dumping it in until the engine dies. Let it sit for 15 min. and start her up. This dissolves most of the carbon. As for root causes, the most common are 1. Idle speed set too high, 2. Engine running too hot, 3. poor fuel quality 4. It's actually a ford 300 six-cylinder you are working on Having the ignition timing advanced too far will also raise combustion temps, and will get that carbon glowing. Well, that's all I can think of right now.

I'm a givin' it another shot. I've had them wrong in several different combinations, so the right one should fall in place eventually. If anyone else has any other ideas, please let me know. I appreciate it greatly. We need a smiley that gets on it's knees and worships, I'd be using him now.

yeah, it sounds like timing belt/ignition failure to me.

Glad to see it passed. That was quite a dramatic drop in NOX. I'm impressed.

Well, before I put this engine together, I transferred the timing marks from the flywheel onto the crank pulley. However, I didn't transfer the timing belt marks. Apparently, these marks aren't related to each other at all, from what I understand. Cmon, there's gotta be another way to do this, save for pulling the engine and putting the old flywheel back on and making more marks on the pulley.

Sounds simple, but is it? I need to put timing belts on an ea82. Simple, right. Now let's say this engine is no longer in a subaru, it has a different flywheel with no marks, and has a bellhousing on the back with no inspection hole to see the marks, which aren't there anyway. What i'm asking is, what on the front of the engine corallates with the marks on the flywheel? The little dowel pin in the crank timing gear, the keyway in the crank, or some other dot or mark? Also, I am cursed with having a very worthless Chilton's manual to go by. Do the little holes in the camshaft sprockets both face up, or are they 180 apart? I hate to ask a question which has been asked a million times before, but the no flywheel marks have me stumped. Eric:cornfuzz:

Grain alcohol would work, but it seems like a shame that your car enjoy that and not yourself. Isopropyl alcohol works well, it is the ingredient in gas line antifreeze (drygas). On that van, I went to Lowes and picked up a gallon of denatured alcohol (ethanol denatured with methanol, whatever that means) and it worked well. Since you are trying to control NOX, I'd back the timing off a few degrees, and run around 50% alky to keep CO and HC in check. Let us know your results.

im-preh-za with accent on the E

2.2's look cooler.

The easiest way to reduce NOX is to retard the ignition timing a few degrees. This is especially good if the HC and CO levels are well within spec, as retarded timing will make them rise. Check your EGR valve for proper operation. If all else fails, add alcohol to the tank. It burns cool, so NOX goes down, and it also dramatically drops HC and CO. You'll want to make it at least around 50%. Get about 8 bottles of DRYGAS, with either isopropyl methyl, or ethyl alcohol. Doesn't really matter. Don't let the alcohol sit in the tank for weeks on end, it has a tendency to make things corrode. Like after you pass the test, go fill 'er up. This is one of those things to do when you have around a quarter of a tank of gas in the tank. Don't tell them there is alky in the tank. They won't know if you don't tell them. There is no real harm in putting alky in the tank, but there is no federal tax payed on it, because it isn't considered a motor fuel, and that's where the trouble lies. Lets just say I got a sh*tty 1984 ford van with a carbureted 300 six to blow pure oxygen out its a$$ for a friend in Stafford county.