7's do not have cranks. They are Rotaries.
complicated
as long as they are both non-turbo or both turbo.
car will have a hard time starting, or more commonly will not start at all
check timing. timing advance. or slack in timing chain/belt
1988-1991
Depends, which engine is in the 85, 13b or 12a?
I had a 1988 convertible that averaged 22-25 mpg.
royal purple
You go to servicing
No. 88 is a series 4 2nd gen and 91 is a series 5 2nd gen.
do you mean it cranks, but will not start?