Anyone can help me answer this how to measure ring gap!

This from manual for 2ZR-FE (09-12) == not sure what engine you are referencing.

U s ing a feeler gauge, meas ure the end gap.
Standard E nd G ap:
I T E M SP E C I FI E D C O N D I T I O N
N o. 1 Ring 0 .2 4 to 0 .3 1 mm (0 .0 0 9 4 5 to 0 .0 1 2 2 in.)
N o. 2 Ring 0 .3 3 to 0 .4 3 mm (0 .0 1 3 0 to 0 .0 1 6 9 in.)
O il Ring 0 .1 0 to 0 .3 0 mm (0 .0 0 3 9 4 to 0 .0 1 1 8 in.)
M aximum E nd G ap:
I T E M SP E C I FI E D C O N D I T I O N
N o. 1 Ring 0 .3 1 mm (0 .0 1 2 2 in.)
N o. 2 Ring 0 .4 3 mm (0 .0 1 6 9 in.)
O il Ring 0 .3 0 mm (0 .0 1 1 8 in.)
I f the end gap is greater than the maximum, replac e the
pis ton ring. I f the end gap is greater than the maximum
with a new pis ton ring, replace the cylinder block.

Top dead center cylinder 1 measure tappit gap loosen nut on adjuster use screwdriver to lessen or increase gap keeping driver in addition tighten nut making sure adjuster doesn't rotate check gap again readjust if necessary repeat for other tappet
top dead center cylinder 2 and repeat above same for each cylinder
if the engine is an overhead cam the above won't work

check that the PCV valve is properly installed
it is a one way unit to the manifold
were the rings installed the right way up
was the ring gap measurement recorded during installation

i think you left out the word NOT? above.
I'm not boring the cylinders, right>? key word NOT.
if not tapered the gaps are spec,.
if bored , the same.
if not bored, the answer is below. in all cases.

that is easy, the bottom of the cylinder is not tapered.
you measure and set ring gap there (BTC), and it is set (ground) right there..
and then move it to the top and see it go larger ?.that gap. it sure will.
or do the math and add the taper measured amount to the gap spec. (using equation, Pi x D. = circumstance) (D = tapered max diameter)
what you don't want is , to have the gap hit zero as the piston
goes to BDC.

so say the taper is .005"
so circum is .016 wider, add that to spec gap.
then slide ring to BTC see gap go to, spec.

Pi = ? = 3.14"

push the ring to the bottom of the cylinder and measure the ring gap. It will be .010" minimum to .025" maximum. .010" indicates goor rings where as .025" indicates worn out rings

You need to take in car service.


Friday The 13th In Real LIfe Prank Itvchannel

Great that you are checking/measuring the spark plug gap...many people overlook this setting...you can not count on the new plug having the correct gap...Most plugs with today's electronic ignitions use the 35 mm gap...however, your best answer is to ask your Auto Parts store what the gap should be when you purchase the new plugs...Good job, hope this helps.

A general rule of thumb for ring gap is .003 " per 1" of bore. Example 4" bore minimum gap at bottom of cylinder for the ring is .012". IF fitting new rings then push the ring to the bottom of the bore ( smallest dia.) and measure the gap . nothing under .010". Max ring gap at this point should not exceed m.025" and if the gap exceeds this then the sides of the rings will have sharp edges from wearing on the piston lands.. The distance travelled depends on the service interval and the air cleaner being used as a dusted motor will need new rings within 15.000miles. and a well serviced motor can exceed 150.000miles before the rings need replacing

Which Piston Ring Gap? First of all you need to purchase a Hayne's Manual for your car. It will give you the specifications under the Engine section of the book. The piston has three rings on it. From the top you have your first compression ring, then your second compression ring (these "clearance" specifications or "gap"), should be the same as measured on the piston insofar as the clearance between the "lands and grooves" or between the ring and the piston groove. The third ring is your oil control ring which will have a different clearance between (for example), the top of the ring installed and the piston's groove. Then lastly, you need to place the compression rings and place them in the bore of the cylinder WITHOUT being installed on the piston. A measurement is then taken between the opening gap of the ring while in the block. To make sure it's lined up properly, invert a non-ringed piston down into the bore from the top to make sure the ring is installed at the same depth all the way around.

If you don't want to buy the Hayne's Manual, just stop by your local Dealership and get the Specifications for the two compression rings, the oil ring and the "installed" clearance or gap on the rings.

Hope this Helps,

~00 Buck~

"Still living on the Right Side of Dirt..."

Good chance that the ABS sensor need to be adjusted to the speed ring on the hub. it's a common thing that happens when the brakes has been service and the technician did not measure the gap between the sensor and speed ring on the hub. Clean the speed ring on the hubs and measure the gap the the ABS sensor to the speed ring and double check the wire harness. inspect for any damages like corrosion. The gap should be 0.005 to 0.050 inch (0.127mm to 1.270mm), use a brass feeler gauge so it wont stick to the magnetic abs sensor. Good luck and hope this helps.