rough running ram50 1989 2.6 carb

[xboxrox]

Hello frogzmax ~ welcome to this place

ROUGH IDLE (assuming good ignition good spark plugs good compression good fuel)

1) valve lash not correct ~ are the lifters noisy ~ Rislone engline flush & oil change & hy-per lube ZINC
2) carburetor air/fuel idle mixture adjust ~ shoot for highest reading on a vacuum gauge
3) visually check air cleaner thermo valve being open with warm engine & air filters not clogged
4) visually check choke plate is open with warm engine
5) check warm engine idle RPM with a tach
6) check warm engine initial timing with timing light
7) check for vacuum leaks with hand vacuum pump ~ especially test the distributor vacuum actuator & secondary throttle actuator
8) check the carburetor to intake flange connection for leaks ~ use teflon plumbers tape sparingly on threads of loose bolts
9) clean & remove any electrical silicone grease from the TPS & carburetor control wiring harness connections
10) it's possible the carburetor needs work ~ rubber diaphragms wear out over time regardless of mileage on the vehicle
11) DIY carburetor rebuild or buy a rebuilt carb from a vendor close by your location <~ keep going back for replacement warranty carbs
12) check out my member page with Mikuni carburetor photo albums (more photos coming soon)

Thanks for joining here frogzmax