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1978

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Question
Interior and parking lights stay on after car has been turned off - 1978 Buick Electra
Hello. If these lights will not turn off then it is usually in the light switch. This switch can fail internally and cause this. It can also be the ignition switch, but most of the time you will also have...
Question
Not getting gas to the carb
Your symptoms are a bit in conflict. One comment suggest that there is no gas getting to the carb - in which case it should not run at all. Another comment indicates that is runs, but won't idle - and...
Question
Coolant leak from a black box (HVAC box)?
The most likely cause of your leak is the heater core inside of the car's heater case. The leak will come out of the A/C's drain. If you are going to bypass the heater core then I would recommend connecting...
Question
I've got a stock 350 with an edelbrock 1406 carb I just put on that I bought used. It has a dead spot in the accelerator so I chan
Hello. From what you describe it would appear that the carburetor may need to be tuned or adjusted. Every engine runs differently, so in most cases, when a new or different carburetor is installed on an engine it will need...
Question
Replacing rear drum brakes with a new rear drum brake kit.
Hello. If you are replacing the entire rare bakes as a set up, which is sounds like, then yes, the axle will need to come out. this wold be the only wat to remove the backing plates. Once the axles...
Question
Shutting off and difficult startup - 1978 Jeep CJ5
Hey there, thanks for writing in. It sounds like you may have a large vacuum leak. Ensure the PCV system is hooked up correctly and that there are no broken or damaged vacuum lines. A smoke check of the induction...
Question
My car's key turns but doesn't come out. My car will not crank either. What is the problem?
Start by gently wiggling the key to the left, the right, upwards, and down. If the key is damaged or bent, you will have to compensate for that damage in order to remove it. The lock's cylinders can collect dirt,...
Question
Key won't turn in the ignition 1978 Ford Mustang II
Hi there - there a couple of possible faults preventing your ignition key from turning in the ignition lock cylinder. First is that the key is sufficient worn, or the lock tumblers themselves, that they are simply not moving the...
Question
The transmission slips gears and the car has no kick down
If the transmission is slipping, then the vehicle will seem to not accelerate, or the vehicle will not move very fast. It seems that there could be an issue with the transmission that is causing the slippage. Check the kick-down...
Question
Car runs ok, but when I put a timing light on all the wires, on on on off off on on etc.
Hi there. Check the spark plugs and see if there is any burned spots. If the spark plug tips are white and looks like they are corroded, then the spark plugs are fouled out and need replaced. If the spark...
Question
My Ford cortina has just cut off while driving and I suspect my points because there is no spark
Hi there. Wow, points and condenser! I have not heard those words in several years. Not sure if, your vehicle is equipped with standard ignition. The change over to electronic ignition started in 1974. Assuming, your vehicle has standard ignition....
Question
COOLANT LEAK 1978 Lincoln Continental Mark V
Hi - I believe you have a leak in the heater core - the tiny radiator under the dash (inside the big black plastic box you mention) that converts hot engine coolant to heat for the passengers. There is no...
Question
Differential ratio
You should not mix different axle ratios or there may be damage to the components in the 4x4 system. If front drive shaft and rear drive shaft turn at different speeds then damage inside transfer case gears can happen. Most...
Question
Power drain 1978 Cadillac Seville
Hello - you may have a charging system problem, although you have replaced virtually of those components, or there may be a parasitic drain on the system that runs your batter down overnight. This can be diagnosed by identifying which...
Question
I am replacing my power brakes booster and need some advice about removing the power unit from the bell crank.
Hi there. When removing the brake booster from a vehicle, you will need to remove the master cylinder and cap off the hydraulic lines. Then go in the cab and remove the pin from the bell crank and unbolt the...
Question
Vehicle starts sometimes, but dies and won't restart.
To clarify, the year (1978) of the Chevy Suburban in question you are asking about refers to some EFI terms that a vehicle of this year would not have otherwise come with from the factory. The answer below assumes this...
Question
Ignition/lock cylinder.
Hi there. After removing the steering wheel and getting to the turn signal switch cam, remove the snap ring from the steering column shaft and pull off the housing for the horn button. Then unclip the turn signal switch cam...
Question
Hello I have a 1978 Chevy four-wheel-drive. I completely tore it down and restored it and put everything back together, but the dash lights are not working properly.
Hi there. It seems that the dashboard lights are grounded to the turn signal switch circuit. This will make your dash light come on when they are not to come on. For the indicator light staying on issue is the...
Question
Ticking and knocking sound and follows as the rpm's increase.
I would have to listen to the noise firsthand to know for certain. However, one guess is that the noise you're hearing is from the valvetrain. Valvetrain noise, such as worn lifters or misadjusted valve clearance, is generally characterized by...
Question
Instrument panel lighting problem
Hi there. In older vehicles like your 78 Ford, this type of problem is related to an exposed wire that is causing an electrical short. It could also be a fault with the electrical cluster behind the dash. You should...

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