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First Generation Legend (1986-1990) Discuss the 1st Generation Honda/Acura Legend (US 8

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Old 07-17-03, 11:15 PM   #1 (permalink)
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Car 1: 1989 Sedan L. and 1990 Sedan LS
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exhaust valve adjustment

For those of you with calluses on your knuckles, here's the details on how to adjust the exhaust valves on the 2.7 engine:

Exhaust Valve Adjustment: Acura 2.7L V6

(note: valve adjustment requires removal of upper timing belt covers. Also, remove spark plugs to reduce effort when turning the crankshaft by hand)

1)Rotate crankshaft clockwise so No.1 piston is on TDC of compression stroke. Marks on the camshaft pulleys and the TDC mark on the crankshaft pulley should align with their respective housing alignment marks.
2)Ensure exhaust valves on cylinders #1, #2 & #4 are closed. Loosen lock nut on adjustment screw above exhaust valve on cylinder #1. Turn the adjustment screw until it contacts the valve, then turn the screw an ADDITIONAL one-and-a-half turns. Tighten lock nut.
3)Adjust valve adjustment screws on cylinders #2 & #4 using the same procedure.
4)Rotate the crankshaft one full turn clockwise so #5 piston is on TDC of compression stroke. Ensure exhaust valves on cylinders #3, #5 and #6 are closed.
5)Loosen lock nut on adjustment screw above exhaust valve on cylinder #3. Turn the adjustment screw until it contacts the valve, then turn the screw an ADDITIONAL one-and-a-half turns. Tighten lock nut.
6)Adjust valve adjustment screws on cylinders #5 & #6 using the same procedure.

As I mentioned, this is knuckle-grinding work ...tedious and exacting ...but if you have a high-mileage engine, proper adjustment should solve some of the engine ticking.
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