VACUUM HOSE DIAGRAM FOR 1987 BUICK REGAL GRAND NATIONAL

Main bearing cap, vin 7--100ftlbs, all of them.

theres no distributor and the firing order for your 3.8 is 1-6-5-4-3-2-the following link shows the coil pack
Buick General Motor 3800 V6 Engine Firing Order DIS IDI ignition timing 3.8 Buick Engine Coil Pack Firing Order Spark Plug Wire Location Which way do the spark plug wires go on & what cylinder is what?
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For the Buick V6 231 3.8 liter turbocharged engine:
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Answers!
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Firing order:
1 - 6 - 5 - 4 - 3 - 2.
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Spark plug wire location on coil pack:
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Closest to the back of the car, left to right: 1 - 5 - 3.
Closest to the front of the car, left to right: 4 - 2 - 6.
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Spark plug wire location on engine:
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drivers side, front to back of car: 1 - 3 - 5.
passenger side, front to back of car: 2 - 4 - 6.
.----and this link shows the coil pack to cylinders
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3 8 Buick Turbo Engine Coil Pack Firing Order Spark Plug Wire Location

Not sure of your engien size as you didn't say so I went with the most common enegine the 3.8 liter. Again I wasn't sure of what vacuum diagram you needed as the is vacuum for emissions, air conditioning and cruise control. the picture above is for emissions for the 3.8 liter engine. Hope this was what you were needing but if you have a different engine (305 or the 3.8 turbo) you can reply back here with what diagram you needed or the correct engine. Hope this helps...

you don`t say where they keep breaking.if its around the bolts then you can use a thicker washer this might help.if the tracking system that the seat slides on then if there is room you might be able to weld a re-enforcing plate to the system where it cracks to stop it.

Most cars have the diagrams for vacuum hose routing on a sticker somewhere either on the underside of the hood or in the engine compartment somewhere. If none exists, you'll need a manual for the car to see the complete routing.

I have a 84 grand national hot air. Just need to know how to rub my vauccm line after the EGR delete? Thanks

turbo regal wiring diagram google it

its toward the back on the driver side by the rear end on the under carriage

i have a 1987 buick grandnational and put a new fuel pump in and the car will run about 5 min then just shut off

its the relay its one of the 2 on the drivers side fender right on top ive replaced 2 of them.
Steve