Engine trouble engine will start runs ruff will not take gas blowing black smoke out tailpipe

SOURCE: 1990 DODGE D150 WON'T START WHEN HOT

There is a temp. sensor on the exhaust manifold that I just switched out on car that done the same thing it would start when cold but once it was hot and you killed the car it would not start back. When this goes bad its throwing the wrong signal to the computer that it is too hot and allowing it not to crank. This sensor was on the left side of the engine if your facing the car from the front. Also It can be tested with a multimeter to see if it is bad.

Colin Stickland

• 22516 Answers
• Posted on Nov 09, 2008

SOURCE: 1989 Dodge Ram / Cold Start Trouble

clean out the carb and fit an inline fuel filter between the pump and the carb .

SOURCE: raw fuel coming out of tailpipe, ck engine light

It Could be Bad Injector or a burnt valve get a compression test performed that will rule out burnt valve,could be bad injector!!! :(

SOURCE: ruff idle

could be mass air flow sensor or faulty plug(s)

SOURCE: 318 starts but wont stay running blows black smoke

The older chrysler products have a ballast resister on the firewall that is used for dropping the voltage to the ignition coil. During a start procedure, while the key is turned all the way in start position 12 volts bypass the resistor forcing a high output of coil voltage. When you release the key to the run position 12 volts goes ito the resistor & a lower voltage of around 6-7 volts comes out, & goes to the coil.
What happens, is the resistor breaks inside and no voltage is coming out the resistor. Thus only a start condition exist with no run.