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Classic/Antique Car Repair/How to check for Spark/Fuel?

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Expert: - 5/5/2008


Question
Hello,
I have a 1970 Dodge that in storage that I like to take out every few months.  I've often heard that when these don't start, I should first check to see if I'm getting Spark or Fuel.

I'd like to know what is the best method to check for these?  For Spark, can I just pull the #1 spark plug wire off (by the boot) and hold it to the valve cover?  My boots are relatively long -- will the spark make it all the way from the metal conductor inside?   Is there a tester for this?

For checking for Fuel - I've usually just done a smell test -- if the carburetor smells like gas, I have figured it's getting gas.  Is there a better way?

Thanks very much for any advice on this troubleshooting setup!  

Answer
To check for spark remove the coil wire from the distributor cap. Hold it about 1/4 inch from solid grounded metal. Crank the engine and the spark should be a bright blue. To check for fuel remove the air filter. Using a flashlight look down into the throat of the carburetor. Pump the throttle and there should be a good squirt of fuel from the accelerator jet.
Brad

Classic/Antique Car Repair

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Brad Sears

Expertise

All automotive including antique and collectible. However if the car has been modified I can only answer in general terms and maybe get you pointed in the right direction.

Experience

Automotive tech instructor. Syndicated auto columnist 1970's though the early 1990's. Syndicated auto radio talk show, Ask Brad About cars, CBS Radio 70's through 90's TV Show "Last Chance Garage" 1980's PBS-TV syndicated. Auto instructor for the following companies: Fram Autolyte Holly Carter AMF Ford Motor University Of Conn Blue Hills Technical School Sugar River Technical Center Grew up in a family garage in Needham Mass and turned wrenches from the age of 14.

Publications
Manchester Union Leader, Nashua Telegraph, Motor Service Magazine, Yankee Magazine, Popular Mechanics (Saturday Mechanic early 80's), Los Angeles Times, New York Times, and lots more.

Education/Credentials
More than I care to remember. Basically Franklin Technical Institute in Boston, Northeastern University, Fitchburg State Teachers College, Tufts University, and a lot of factory schools along the way.

Awards and Honors
Moto Award winner. And much more.

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