Having problems with your 1997 Chevrolet Blazer ?
Number 4 cylinder miss fire - 1997 Chevrolet Blazer
Check your distributor cap & wires first. If all is ok pull the spark plug and check if it's oil fouled. If there is no oil on the plug the plug might be bad. if there is oil on the plug you can get an adaptor that screws over the end of the plug and shields it from getting oil fouled. Of course this is a temporary solution for a piston ring or valve seal problem. I had a caddy I ran with plug shields fo 5 years so they work! Good luck!....PS If your plug is oil fouled you can also use a heavier oil like a 20/50 or use 4 quarts of 10/40 and a quart of lucas oil stabilizer. This will help keep the oil where it belongs and don't forget to do an oil change every 2,500 to 3000 miles.
Repair Help & Product Troubleshooting for 1997 Chevrolet Blazer
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