Vehicle is a 1988 GMC suburban 4x4. I have recently replaced the fuel pump, fuel filter, air filter and added a throttle body spacer.
2007-03-12 17:31:28 · 5 answers · asked by Eric W 1 in Cars & Transportation ➔ Maintenance & Repairs
Vehicle is a 1988 GMC suburban 4x4 with 70,000 original miles. I have recently replaced the fuel pump, fuel filter, air filter and added a throttle body spacer.
2007-03-12 17:41:03 · update #1
timing chain is done, check the timing,Ill bet its the timing chain and gears esspecially if its original. I have the same thing only a pickup and it did the same thing,REMEMBER OLD CHEVYS NEVER DIE THEY JUST GO FASTER
2007-03-13 03:49:27 · answer #1 · answered by bearman48064 3 · 0⤊ 0⤋
How's the timing?
2007-03-13 01:13:54 · answer #2 · answered by Eric F 6 · 0⤊ 0⤋
Are you running the correct octane rating for your vehicle? A 5.7 liter is pretty healthy engine and may require more than 87 octane. Thats probably why it knocks and is losing power.
2007-03-13 01:02:44 · answer #3 · answered by meander 3 · 0⤊ 1⤋
Check your cap and rotor,and if your check engine light is on have the system scanned at autozone or somewhere similiar.
2007-03-13 00:49:05 · answer #4 · answered by Johnny 4 · 0⤊ 0⤋
Its shot dude. Probably not what you want to hear, but its just old and tired.
2007-03-13 00:36:45 · answer #5 · answered by jwo 1 · 0⤊ 0⤋