Hi, I recently changed the alt, serpantine belt and battery in my 1999 blazer after the battery light came on and everything died. Once I'd changed everything the light went off and everything was working fine, a couple of days after I then had the water pump changed as there was a coolent leak, now the car will turn over but wont start and the battery light has come back up again...??? The guy at the workshop siad he started it fine this moring to run the coolent for an hour or so then turned it off, went back to start it and nothing... I did notice that the guy had cleaned everthing down with WD40 would that effect anything?? Could it be the fuel pump??? Any help would be great!!

Thanks

 

As with any engine it requires air, fuel, and spark to start. Let's start with fuel by following the steps in 96+ Fuel System Diagnosis.