Since I need to pull the crank pulley for the Code 18 problem, I am going to go ahead and replace the timing chain and gears in my 1993 Buick LeSabre 3800 since it has 323,000+ miles on it (these 3800s were great engines, it is a shame that GM discontinued them). The last major work I did was on Mum'* 1983 Buick; replacing the timing gears and chain and the crank bearings; the engine would lose pressure at idle and Dad told me that was a sign of wore main bearings.
I have the GM service manual as a guide but know that those who have done the work before can give me good advice on the procedure for the '93 3800. I have just read that there is no need to remove the water pump. What other things do I need to know that may not be in the service manual?
I have yet to order the parts for this job. Would it be advisable to go ahead and replace the chain tensioner considering the mileage on the engine? Should I go ahead and order a new cam interrupter magnet? The magnet is expensive considering what it is, a magnet in a plastic holder; however, I am concerned that trying to remove it may damage the holder allowing the magnet to fall out later; so it is advisable to go ahead and order a new one? If I order before 1-24 I get a 20% discount on the parts.
Thanks everyone for this forum, it truly is a big help.