Opel CIH: Ignition System Manual Pdf

Filename: Opel CIH: Ignition System Manual Pdf
Language: English
File : PDF
Size: Mb
The Opel ignition timing is designed to be set at TDC (Top Dead Center). Adjustments are made to the point gap (.018″ on most), and operation is checked at idle with a dwell Meter. Dwell is to be set to 50 degrees +or- 2 degrees. This test is to be performed with the distributor vacuum hoses disconnected and plugged…

(1) How to Verify #1 TDC Camshaft Sprocket Timing Generally, if an engine ran (without backfiring) prior to a tune-up, it can be presumed the timing marks are probably in alignment. If the engine doesn’t run, or backfires on cranking, or is low on power, then there is a chance it may be caused by cam timing being off. To inspect timing marks for #1 TDC alignment, the camshaft dowel pin needs to be in the lower-center “6 o’clock” position (1A), at the same time that the small ball marker on the flywheel is lined up with the pin in a window, on the lower passenger-side rear of engine (1B). Note: this is not how to align the cam timing but it is how to verify if you are aligned for #1 cylinder firing position. Cam timing is always done on #4 TDC, see below. To view the camshaft dowel pin, either remove the valve cover, or remove the triangular plate (held with three 10mm bolts) on front of the cylinder head. Use a flashlight, and consider the angle from which you are viewing, to determine correct “6 o’clock” position of the camshaft sprocket…
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