well idon't know why but i can give you some suggestions
1st change the petrol you use
2nd go to your local car mechanic to ask him to see if he can find the problem
(that should not cost anything if it does their ripping you off)
and lastly it may be because its an old car and it is struggling to keep as efficient as it used to be
hope this helped
what size radiator comes in a 91 chevy caprice classic
4.3, 5.0, or 5.7 liter V/8
The engine firing order for a 1984 Chevy caprice with a 5.0 liter engine is 1, 3, 4, 2. The number one engine is the one closest to the passenger compartment.
350 =5.7 305 = 5.0
V8
if it is a 3.8 liter it is 165432 for the 2.8 it is 123456
about as mutch as a Saturn 2.2 liter
A 1987 Chevy Caprice Classic with the original engine does have a carb and the engine is a 305, because I have one. This can have a 307. I have an 87 Caprice Estate Wagon, with a 5.0 liter 307 olds. Which, is actually for sale.
The wiring diagram from the distributor cap to the spark plugs for firing order for a 93 Chevy Caprice 5.7 liter engine is found at Wiring4cars. You can search the site by vehicle year, make, and model.
Well mine is a 5.7 liter 350 v8, with about 170 hp
65 ft-lbs 65 is 94 & 95 68 is 91-93
200hp@ 5200rpm 235ft lb of torque 9 miles a gallon