Question about Cars & Trucks
Do not use synthetic oil in a motor with that many miles, it will start leaking very bad. Use oil that indicates high mileage type, it has seal conditioners in it. Also, do not use seafo either, it too will cause isues in an old motor. Try to change nothing, again, use an oil that's intended for high mileage motors.
Posted on Nov 30, 2014
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Posted on Jan 02, 2017
If you haven't replaced the O2 sensor that is causing your check engine light to come on by generating a fault code in the ECM, replace it first. Cleaning the Catalytic Converter is not the thing to do. Replacing the faulty sensor will pay for itself in the long run with the better fuel economy you will get.
Posted on Aug 14, 2009
remove the shroud around the steering lock ,then with a meter locate the feed ,then the 12v when ignition turned on then with a suitable paperclip or piece of wire turn the igniition on and then from the 12v supply apply a supply the other connection for the starter motor and try that ,if it starts ok then renew the ignition switch ,if it doesnt start its the electronics
Posted on Dec 27, 2009
What you want to do is find a shop that sells BG products. Ask them for part number 210 (engine flush) & part number 110 (MOA ((motor oil additive)) ) . First install the oil flush and moa into your oil filler and run motor for 30 min AT IDLE. Now drain the oil from the crank case and install new filter and castrol 5w30 non synthetic oil. Then run the motor for 15 minutes AT IDLE. Now drain that oil and install new filter. Now goto part store and get MOBIL 1 0w30 and preferably a factory GM oil filter. Install the oil and filter and put one more can of MOA into crankcase. We do this service at our shop ($250). You can do it for about $70. We suggest always using mobile 1 , it is a far superior product. The 0w40 takes no time to get to the lifter upon start up since its so light. once you reach operating temp the viscosity is factory...good luck
Posted on Jan 06, 2010
The carbon on the spark plugs and black smoke coming out the tailpipe means you are running rich. (Too much fuel) this can becaused by anything from a bad Mass Airflow Sensor to a stuck injector to a leaking Fuel Pressure Regulator to a bad Upstream Oxygen sensor.
First, you need to check fault codes to see what the computer says the problem is. I would not be pouring injector cleaner in your vehicle unless you are absolutely certain the the cleaner you are using is going to be compatible with your fuel system. I've seen a lot of fuel system damage as a result of that.
In 2005 Chevrolet Avalanch had two different 5.3L engines one was flex fuel and the other was not.
The 8th digit in your VIN will tell you which engine you have. if it is a "T" it is standard gasoline and if it is "Z" it is a flex fuel engine.
There are several Technical Service Bulletins (TSB's) issued by GM for the fuel systems on BOTH of these engines. Depending on your engine type and the codes retrieved from the Engine Control Module, these TSB's may or may not apply to your problem.
Posted on Dec 02, 2010
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