View Full Version : Cylinder layout

12-11-2007, 04:29 PM
So I want to check my wiring to the plugs to make sure its wired correctly, but I can't seem to find any marking or layouts on how the cylinders are numbered.

I have the firing order from the manual so I know how to wire up the distributer cap, but where do I go from there?

Help please.

I have a 1998 PS205 XStar edition and I have the 5.7 Vortec Indmar engine.



12-11-2007, 04:50 PM

12-11-2007, 04:58 PM
Thanks rspiecha that helps a ton.

12-11-2007, 05:03 PM
The numbering of the cylinders and firing order for a 5.7 is as follows:

left bank 1357
right bank 2468

Cylinders 1 and 2 are towards the front of the boat.

firing order is 18436572

It's stamped on the motor somewhere. I can't think of where, but I think it's obvious. Like on the manifold toward the back?

12-11-2007, 09:01 PM
Thanks Muttley. Moving forward again :)

east tx skier
12-11-2007, 09:04 PM
Port/starboard left/right or facing the engine left/right?

12-11-2007, 09:13 PM
If you are looking at the front of the engine, (opposite the distributor) the #1 cylinder is on the right side as well as 3,5,7 in order. The left side is #2 and then 4,6,8. Hope this helps.

TX.X-30 fan
12-11-2007, 09:33 PM
Sh1t now I'm confused, And mine is still in one piece.

88 PS190
12-11-2007, 09:37 PM
Little tip, NUMBER THEM!

Take a paint marker to the cap and the wires.

Now another way to do this is with the engine running and being careful to avoid a shock you can pull wires from a plug, if the idle gets worse then the wire is in the right spot.

Not that tricky to figure out.

If it is not wired correctly it will not idle worth a darn... so that's a tip, if its idling.. your wires ar ein the right place.

12-12-2007, 09:48 AM
So Chevy08bud, when you say looking at the "front of the engine (opposite the distributer)" you mean standing at the drivers seat looking to the stearn right?

12-12-2007, 10:48 AM
Cylinder layout:


1 2
3 4
5 6
7 8


The firing order is: 18436572

12-12-2007, 11:13 AM
Crystal Clear now.

Thanks Muttley