[firefish]

From the top of the distributor, what is the firing order? Ie which pin goes to which cylinder?


Many thanks!

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[banditsc]

Firing order is 1342

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[firefish]

Thanks bandit but I was referring to the order in which to attach the leads to the cap. I have now found it out and it is 3-1-2-4 counting from the top.

But why did I need to know this?

It all started when I decided to replace the ignition wires. I got the leads from Pete and the cap and rotor from a place that starts with a Po and ends with rsche. The wires where numbered and so was the cap so I thought "great someone smarter than me has done the thinking for me" and simply yanked the old stuff out - smart move!

With everything back together the car doesn't start. CRAP! So I put the old wires back and still it won't run.

Since the only thing I did without thinking was to attach the wires to the pins in accordance with the labeling I thought that "hmm, this might be wrong". So I do the search here, and I google and I try Clark and so on. All I end up is with 1342 and that doesn't help me much. I did find the pin sequence for the 8 valve engines but not for the 16.

So I start PET up and look at the dist cap and wires. And sure enough, there are dotted lines connecting each pin in the cap to the corresponding cylinder. So I move the wires accordingly and voila, she runs like a charm again.

The lesson to be learned here is that you always need to check everything. And just because you buy an OEM part doesn't automatically mean that it is right.

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[banditsc]

My original cap had a nice sticker on it that showed the order, the replacement doesn't have that.

Try doing that on a 928 where you have eight wires. I pulled the cap and wires off together as a unit on my friends car figuring I would use that as the pattern for the new wires and cap. Put it all together and it was down on power, found the #2 wasn't firing and #4 wasn't as strong as others. Turns out the last wing nut mechanic decided to put the long #4 wire on #2 and stretch the #2 to #4. So when I applied sensible logic to the old setup using it as a model it didn't exactly work out.

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[firefish]

My cap has numbers printed on it. But in the wrong position...

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[flash]

pretty easy to verify - bring #1 up TDC compression stroke - see where it points - that's #1

then go from there 1-3-4-2, which is the firing order

note: the distributor rotates CCW as seen from the front of the car

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[Lear35A]

[quote
note: the distributor rotates CCW as seen from the front of the car
[/quote]

Is this correct? Everything I've read says the crankshaft turns CW when viewed from the front (many threads on cam timing and belt replacement) and the distributor has to rotate the same way as the crank, doesn't it?

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[flash]

ok - this is odd - the rotor spins clockwise, but the wires are oriented counter clockwise???

lol - i have always changed them one at a time, from cap to cap, so i never bothered to check this - i am way too tired to think about it right now though

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[firefish]

The best way is off course to pull and replace one wire at a time and this is how I normally do it.

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[968 GUY]

If you look in the workshop manual...vol 1 pgs 15-4 and 15-5 it may help you understand the rotation and placement of the wires, even though the cap and wires are not shown, just the rotor. It's clockwise.

2....1

4....3 that is how I would interpret the wire placement, but only judging fom the pic in the manual.

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[flash]

going from top down on the cap it's 3-1-2-4

so, it appears that while the firing rotation is 1-3-4-2, and it rotates clockwise, the cap is internally wired so that the wire input is not necessarily the pin it is nearest

very odd - those wacky germans

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[Lear35A]

Glad we got that cleared up. [img]style_emoticons/<#EMO_DIR#>/unsure.gif[/img]

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[flash]

lol - yeah - it freaked me out for a minute - as i said, i have always swapped them 1 by 1, so i never gave it a thought, and just assumed the pins went around in a circle in succession, relative to the inputs - it was only this conversation that made me go and check it out

crazy stuff

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[Cloud9...68]

I have exactly the same situation with my car - my aftermarket cap says "2-1-3-4" from top to bottom, which is obviously wrong.

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