Want this question answered?
19mm
40 40
It is between the valve top and rocker For 4ba1 it is 0.40mm
http://www.planetisuzoo.com/articles.htm?id=64&How_to_adjust_your_own_4cyl_Isuzu_valves
Valve Clearance (Cold) Cold intake-0.15mm(0.006)" Exhaust-0.25mm(0.10)" Idle Speed- (900)rpm
more than likely you will find the tick tick noise is valve adjustment's especially if there has been a lack of service
Engine needs to be cold when performing overhead adjustment. Spencer's is .16" intake and exhaust valves closed.
valve clearance for Isuzu 4ba1 engine is 17.00.
No adjustment.
No adjustment. If there is valve clatter, valve train parts are worn.
Valve Lash Adjustment On 1986-92 Isuzu 2.3 & 2.6L Engines AERA member have expressed some confusion on the correct valve lash adjustment procedure on 1986-92 Isuzu 2.3 & 2.6L engines. It appears that previous service manual information may lead a technician to an incorrect adjustment. The service manual indicates that valve lash on the #1 cylinder should be adjusted when all timing marks are lined up. The camshaft however, is in the valve overlap position at the number one cylinder. If the adjustment is made as indicated in the manual, excessive valve lash will result. These engines are actually timed off the #4 cylinder and those valves can be adjusted when all timing marks are lined up. To correctly adjust the valves, first look to see that the cam lobes are pointing down in the cylinder you are adjusting. The correct adjustment is made on a cold engine and is .008 for both valves on the 2.6L engine. The adjustment for the 2.3L engine is .006 for intake valves and .010 for exhaust valves.
5.7 later valve adjustment procedure begins with the removal of the valve cover. Each valve has an adjustment screw. The screws can be turned to adjust the valves.