1987 MR2 won't run after changing motor

what type of motor is it a multi rib belt how tight are you doing it up
do all the pullys turn freely

Loosen motor mount and use a jacck to lift up the engine a bit. Remove timing belt cover.After you remove the valve cover gasket, place a file or something in the grooves at the end of the cams to stop them from turning and loosing timing. remove timing belt and slip new belt on.

you can go to autozone dot com and register for free, the login, choose vehicle year make model, then choose to view your free online repair manual for your car.

belts should be changed every 60,000 miles or 5 years max so it is due a belt anyway.
if the belt does come apart it will do serious damage to the valves , head and pistons.

i would change the water pump at the same time for peace of mind. especially as it will be exposed while doing the belt, and you do not know if the pump is seized/worn.

When a serp belt breaks you loose all power steering. water pump is not operating so car will run hot. battery light would come on because alternator is not working. You would basically loose anything that worked off the drive belt. You would also loose air conditioning.

replace the belt with a new one, when you do the water pump,reset the timing and give it a start,if it works,then you can SMILE,if not, you can use the belt/water pump on the new engine.gotta be the cheapest way forward.......

Not unless you care about your car. When a car manufacturer recommends that you change a timing belt, and usually a water pump. It is for your own good, they may last an average of 100,000 miles; however, it's always best to change your timing belt well before then. If your timing belt breaks it will bend your valves, ruin your head, and cost a lot in labor. So pay $500- $700 now for a new timing belt, water pump, and labor, or wait until your timing belt breaks and pay $3000 for a new head with valves and labor. It's up to you. Happy Motoring!!! :) :) :)

Yes. I think. A lot of cars have the water pump under the timing cover and you change the pump when you change the timing belt. They usually don't seize though, they just leak. Did you run it after it broke? How long before the engine quit? Did it start knocking? When you go to change the belt, look for a broken cam, or other damage that the broken belt would have caused. Some engines are free running, meaning they will turn over no problem when the belt goes, other engines are intermittent, meaning the valves hit the tops of the pistons and cause considerable damage. Find out before you go too far. Hope this helps.

seems like u did not align the cogs properly before fitting the belt.
if that is so then stopo trying to start the car until the belt is replaced after aligning the pulleys.

I would follow the mechanics recommedations. I think he's taliking about the cam and crankshaft seals. Yes the water pump should be replaced as well. The pump that sprays windshield washer fluid onto the windshield is called the windshield washer pump. The water pump is on the engine and pumps water (coolant/antifreeze) through the engine to the radiator and heater core.

On the 1987 plymouth voyager after market water pumps can cause shredding of the timming belt.
Use of a original maufacturer water pump can sove this problem but does cost more. Worth the cost unless you just like changing timmimg belts.