mejonny

Will do. I don't want to turn a seemingly simple timing belt replacement (hope that's the only thing wrong) turn into bent valves or worse - more money more problems! Gotta drive this puppy it's my daily driver. Thanks to all! I will replace and have other issues and recommendations above checked out ASAP.

Thanks Hardbody, Yes my friend told me "timing is everything" and once I get that in sync, things will smooth out and any other issues will be localized. It seems that the first place to look deals with the timing belt/teeth. I will start from there and hopefully the performance/punch will come back to the motor. I know these Pathfinders are way more torquey and punchy when things are running right. Thanks to all replies.

Yes I don't believe the previous 2 owners did that type of maintenance (timing chain) very often. I'm working on the brake system too and everything needs to be done- front: (did the pads today), Right caliper leaking, rotors good till next brake job; rear - needs drums, shoes, and cylinders are leaking. This Pathfinder needs some TLC but it's worth it - The years 1987-'89 were the original, all around good looks and solid performance Pathfinders to date. Good motor/tranny, clean body no dents, sport package (towing, front grill) and the black paint is still glossy. I'll post some pics soon. Thanks again King Man.

Kingman, Sounds like you are a Pathfinder Master. I will do all of the above and let you know which one or more of the issues caused/are causing the problems and post. Thanks so much! Jonny

I bought an '87 Pathfinder last week with 137K miles. The motor is good but I am only getting 60-70% power and now it's starting to sputter and backfire especially when decreasing speed in gear. In 1st gear it wants to hesitate then will start to gain power and run smoother once I pop the clutch and hit the gas pedal. 3rd gear runs at low power state too until I increase gas. There is a smell of gasoline/exhaust when I opened the hood. It also sounds rough under the exhaust system. I already replaced the fuel and air filters. I know the spark plugs and wires are looking old too so I will replace those myself - But what else could be causing the low power and backfiring? The timing belt? Exhaust leak? Bad 02 sensors? Bad catalytic converter? Any thoughts will be appreciated.