Top Dead Center location

[garyS-NJ]

I want to do a leakdown test and may well be doing a valve lash check at some point soon... I know there's a crank mark for TDC on #1 cylinder but how can I locate TDC on the other cylinders?? I'm sure there is a sequence rotating crank from #1 TDC.. I looked through my soft copy manual (time to buy hard copy!) under engine maintenance valve adjustments and that page 2-5 has a black bar on the side obscuring some of the page. I see there is flywheel marks for # 1 and #2 TDC, but is there also marks for #3 and #4 ? and then what is the firing order and can anyone point me to a link to clarify that funky table on the bottom of the page which appears to give all the TDC. the left side is obscured but does that show a firing order #1 #3 #2 #4 ? So, yes, if there's a helpful link so that I understand the manual steps clearly.. thanks!

[dna9656]

You get a LONG wood dowel, short enough to get in the spark plug hole but hopefully too long to get lost in the cylinder, you can mark the rod with any sort of reference marks you like; say millimeters maybe... Get a rubber grommet that tightly fits the dowel rod but won't go through the spark plug hole. Put the grommet on the dowel rod. Now insert the dowel down through the spark plug hole and slowly rotate the crank in it's normal direction and watch the dowel move, if it goes down I would lower the grommet on the dowel so it CAN'T (just to cover your ssa) fall in. When the piston is on it's up you'll see the rod stop moving when TDC is reached. The marking are just for ease sighting the movement as TDC is approached and past.

Harbor Freight has a very nice camera for less than $100.00 you can use to see down into the cylinder. A GREAT inspection tool.It comes with a hook to retrieve things, a mirror to look at the head and valve faces; it records video (and takes stills too} all in color! You can record it on a sim card or use the on board memory and either way you can move it to your PC or lap top for a bigger picture.

[Prairiehammer]

I want to do a leakdown test and may well be doing a valve lash check at some point soon... I know there's a crank mark for TDC on #1 cylinder but how can I locate TDC on the other cylinders?? I'm sure there is a sequence rotating crank from #1 TDC.. I looked through my soft copy manual (time to buy hard copy!) under engine maintenance valve adjustments and that page 2-5 has a black bar on the side obscuring some of the page. I see there is flywheel marks for # 1 and #2 TDC, but is there also marks for #3 and #4 ? and then what is the firing order and can anyone point me to a link to clarify that funky table on the bottom of the page which appears to give all the TDC. the left side is obscured but does that show a firing order #1 #3 #2 #4 ? So, yes, if there's a helpful link so that I understand the manual steps clearly.. thanks!

 

Firing order: 1, 3, 4, 2.