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1972

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Q: Vehicle refuses to start.
Fuel supply to the carburetor needs to be checked. The fuel system including the fuel pump and filter will need to inspected is there is no supply at the carburetor. The carburetor may need to be checked for filling as...
Question
Q: Car will not idle.
When dealing with an older vehicle such as this, the most common cause of a poor idle is a carburetor problem. Before condemning the carburetor, the engine should be inspected for any loose or leaking vacuum hoses. The ignition timing...
Question
Brakes no longer working.
If you step on the brake pedal and it feels soft or drops to the vehicle floor, air has entered the system. However, if the brake pedal is hard and difficult to depress, the power brake booster may be at...
Question
Turns over won't start. 1972 Chevrolet Chevelle
Hello. It is possible that there is a wiring issue, or that the carburetor is actually leaking fuel into the engine which flooded it. I usually pull the spark plugs first to see if they are covered in fuel. If...
Question
Carburetor problem
The carburetor needs a good supply of fuel to keep the engine running; if the fuel pump is not suppling the fuel, or the filter is clogged solid, then fuel cannot get to the carburetor. If fuel is getting to...
Question
Starting, only clicks
The first to do is to make sure the engine turns by putting a socket and breaker bar on the crankshaft pulley bolt and turning the motor. If the motor turns, then you know it is in the wiring. Follow...
Question
Difficulty shifting to higher gears
Hello there. Thanks for writing in about your 1972 Chevrolet El Camino. A few different faults could cause the vehicle to have shifting and acceleration problems. The most common would be the transmission linkage, low fluid level, torque converter, or...
Question
Brake pedal stuck to floor - 1972 Volkswagen Super Beetle
Hello. There is a return spring on the assembly that must be dislodged or broken somehow, and when this happens there will be issues with the pedal returning. Have the pedal assembly and the hydraulic portion of the system inspected...
Question
Where is the fuse for the water temperature gauge?
There isn't one per se. There will be a fused wire with voltage to the instrument cluster (your owners manual should indicate which fuse), but the temperature sensor is providing a variable "resistance to ground," which the temperature gauge in...
Question
Dashboard gauges don't work
There is still a ground path problem from the engine to the instrument cluster, whether through the chassis or not. Might be worth running a new ground wire directly from the engine block to the ground connector on the instrument...
Question
My blower switch only works on #2 speed & high speed could this be the blower resistor?
Hello there, a few common faults can cause your 1972 Oldsmobile Cutlass to only work on the #2 speed air flow. You are correct, the blower motor resistor could cause this fault. Other likely causes would be the fan control...
Question
Smoke that is not coming from exhaust when going above 60 mph.
Hey there. If the smoke is not coming from the exhaust, it may be possible that the white smoke is coming from oil leaking onto a hot exhaust manifold or another piece of the motor or exhaust. The PCV valve,...
Question
Loud popping noise where header and exhaust meet
Hi there - the "combustion bang" you hear taking place at the header flange probably indicates a leak at the donut gasket as you suspect. Unburned, or still burning, fuel catches some fresh oxygen at the flange, and ignites, producing...
Question
Do any of your mechanics work on a 1972 Ford Bronco in zip code 75034 ?
Hi there. We have a few mobile mechanics in the Frisco area, so if you'd like to see if one of them could come to your location to complete an oil / filter change and top off fluids on your...
Question
How to seal an oil leak on a chevy 350?
This hole is specifically designed to be in that location and is for the oil pan dipstick. This is used to check the oil. I would suggest going to your local parts store and purchasing the correct dipstick for your...
Question
72 Chevelle cranks but won't start and has to be flooded but smell no gas
Gasoline is generally not usable after 3 to 6 months. If gasoline has been stored in the vehicle for a lengthy time, the problem is likely that there is just simply nothing to combust. The volatile components in the gas...
Question
'72 Mach 1 with 351C. Runs, idles, revs in park. Sputters, chugs and coughs in Drive. Any suggestions?
Check for proper advance of ignition timing. In particular, verify that advance curve you observe matches factory spec. Measure fuel pump output/pressure against factory spec. If engine compression is good and balanced, apart from timing check and fuel pressure check,...

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