my 1997 blazer is about to hit the 100,000 mark. anything engine wise i should do other than spark plugs and regular routine maintenance? i heard something about timing chains needing to be done around 100,000.

 

Fuel Pump

 

nothing on the timing chain for 4.3 blazers ? i had a 99 s10 2.2 4 banger. its a must do at 100,000. you wont last 20 miles if it fails...

 

The 4.3L is much more durable than the 2.2L. As said above the fuel pump may be an issue soon but other than that just regular maintenance. A 100K is not that much for these engines when properly maintained.

 

happy birthday. My ZR2 turned 130,000 on 4/24 and I got mad cause I wasn't even drivin it. My 4door grocery getter aint far behind, but stangely both radiators driverside jugs poped at 121,000 so watch out if you havn't replaced yours yet.