Hey fellers' I've just received a 89.

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MEMBER
1989 HOLDEN RODEO
389,300 MILES

Hey fellers'
I've just received a 89 holden rodeo 2.6 petrol, Isuzu engine
I replaced the head due to an east west crack I 'ion the coil leads were fitted as about, with number 1 spark plug out, and number 1 piston TDC, the crank shaft timing marks are 180 degrees out, (timing marks are facing to the ground) when the number 1 piston is on TDC, as well as cam is 180 DG out!
The number 1 question is how can number 1 and 4 piston be TDC when the harmonic balancer can only go on one way!
Help would be much appreciated cheers Byron"

1 Reply

HMAC300

MECHANIC
48,601 POSTS

We have no info on this but the balancer rubber may have broken and the outer ring is sliding around. Put a timing light and mark the balancer then start it up see where the mark is then give it a quick rev bring it back to idle then check to see if mark has moved. If it has replace the balancer.