Question about 1989 Ford F 250
Ive only had truck a few days and have filled up front tank every day since ive had it. Seller said new engine and transmission said 5.8 engine but dont supposed to use gas like that
Check for black smoke out of the tail-pipe when the engine is revved. Black smoke means unburned fuel. The most likely culprit is a plugged air filter/air intake. A plugged exhaust, especially the catalytic convertor will kill your fuel economy and power. It may also be in need of a good tune-up (spark plugs, filters, ignition wires, distributor cap/rotor). Also check tire pressures and make sure that you don't have any seized brakes.
Posted on Feb 13, 2014
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Posted on Jan 02, 2017
This is a common problem. On the driver's side frame rail is a large black plastic assembly that the fuel lines connect to. This a fuel switching valve what usually happens is the valve goes bad and the fuel gets pumped from one tank to the other
Posted on Dec 09, 2008
SOURCE: Gas Gauge not reading correctly
The most likely culprit is the sending unit in the tank. They are relatively easy to change, as long as you don't have much fuel in the tank. It's a mechanical unit that has a float that raises and lowers with the fuel level, however with age, the floats can develop leaks and no longer float, of the electronic portion of the unit can go bad and not register the proper level. They are replaced and an entire unit, so it doesn't matter which happened, you will need to change the fuel tank sending unit.
Posted on Jan 11, 2009
SOURCE: ford focus keeps stalling
I suspect it is a problem with the evaporative emission system. Basically, it collects vapors from the fuel tank and stores them in a charcoal canister in the engine compartment. It thens purges them into the engine when the engine is warm and running at road speed. You may be dumping too much vapor because your canister is filling with fule as well as vapor.
Do you try to "nurse" teh tank full at the fuel station? If yes, you may be flooding the canister.
Try just filling it 3/4 each time & see if problem goes away.
Posted on Feb 21, 2009
Ok, there are many issues here that you will need to inspect. I recommend changing the fuel filter and pump as well. this will fix the hesitation. the intake and exhaust manifold gaskets will need to be replaced as well. this will stop the backfiring.
I also recommend checking and running a teat on the PCV valve and inspect the PCV hose as well. it could have a leak or a small crack on it.
Check the air filter and change if needed. this will help with acceleration issues as well. Next, i would run a check on all plugs and the complete wire set as well. change if needed.
Inspect the injectors for leaks and lose wires. make sure they are in good condition. replace any injectors that isn't firing properly.
Ok, there are some sensors that you will need to check as well. i will list them below.
SENSOR CHECK LIST--
1. Check the O2 sensors for worn wires.
2. Check the MAFS(Mas Air Flow Sensors) Check for Damaged, Loose, or Faulty Mass Air Flow Sensor or Circuit.
3. Check the Air Cleaner Temperature Sensor. this sensor could be damaged ro have loose wires. check accordingly.
4. Check the Throttle Position Sensor. this device could be connected wrong or it may be faulty as well. replace if needed.
Be sure and inspect all the above and repair any problem spot you ruin across during your inspection.
Please rate and god bless:)
Posted on May 06, 2009
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