About 300
additional:
the belt is $18, if you do it yourself that's pretty much the whole cost. plus about 8 hours of time at least the first time you do it. i got lucky and got the timing just right when i lined up the gears the first time. the hard part is removing the engine mount and pulling the lower pully off.
From under the car.
The 1990 Buick Century has a timing chain and not a belt. No replacement is necessary.
You MUST replace the cam belt every 50,000 miles on this Volvo. Warning: This is an interference engine.
with your hands...
it should have a timing chain
yes
You ask a professional for help.
Since this category is 305-350, I'll have to assume that YOUR engine is one of the two mentioned. The 1990 Chev 305 and 350 did not use a timing belt. They used a timing chain, and unless something really odd happened, you should never need to replace the timing chain until you rebuild the engine.
All timing gears. You have to disassemble the entire front of the truck and engine to access.
Depends on the year of you Accord. 1976-89 Replace every 60,000 miles 1990-96 Replace every 90,000 miles 1997-10 Replace every 110,000 miles. Replace every 10 years no matter the mileage.
The 1990 Buick Century has a timing chain and not a belt. No replacement is necessary. these cars run forever the chain and pulleys need replaced around 200k
There's a small notch cut out in the outer edge of the crank pulley. Mark this with some bright white or yellow paint, chalk or soapstone. then check where the timing should be set according to the sticker under the hood and align this mark with the correct position on your timing tab on the lower timing cover.