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1978

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Question
Overheating way to fast
Hello. If the engine overheats this fast then you should do a block test. This sounds like a blown head gasket or a cracked head. When this occurs combustion pressure enters the cooling system and causes this to occur. I...
Question
Q: Idling high
Hello. It sounds like you are experiencing either an ignition timing problem or an issue with the carburetor. Most of the time if the engine runs fine at higher speeds, this is caused by a carburetor issue. The throttle plates...
Question
Charning issues, new battery and alternator
Hello there. There are a few potential causes for why the car would have charging faults even after the alternator is replaced. The most common would be the battery cable, shorted harness, battery, or a failed alternator. The first thing...
Question
Car cranking, but then dying
From my experience, checking the fuel filter and spark plugs is a great place to start when trying to determine why your VW beetle is sputtering and stalling out. The symptoms you describe however sound like your Volkswagen is experiencing...
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
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
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
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
1978 Beetle advice
Hi there. That's a lot of questions, and we'll do our best to help you out. First off, the odometer on older VW's is only 5 digits as you suggested, so it is very possible that it might have 185,000,...
Question
convert 1978 k5 blazer 4WD to 2WD
If you are trying to measure and position a frame, use a "tram", which is a specialized frame measuring tool. If, though, you are looking for specific frame dimensions, off of each vehicle, so that you can design a "composite"...
Question
The hazards come on when i turn either left or right signal switch.
Generally this is something caused by the flasher relay going bad. This is a small relay that allows the lights to flash based upon current flow and a resistor inside that causes them to flash. When this is faulty, this...
Question
My 1978 dodge 318 idles fine, but sputters and dies in gear.
If the problem started before you adjusted the mixture but adjusting the mixture allowed you to get the vehicle started, the problem is probably fuel related. You can test fuel pump output and pressure to see if those are in...
Question
How much would it cost to replace drivers side fender on my 1978 Dodge D100
Hi there - unfortunately, this is not a service YourMechanic offers at this time. This task is best handled by a collision repair estimator at a reputable paint and body shop. S/he is trained to evaluate visible and not-so-visible damage,...
Question
I have a 1978 Corvette thats been sitting for 10 years... What should I start with to get it running again?
I would suggest doing the following (Not necessarily in this order), prior to starting the car: 1.) Replace Battery 2.) Remove all old gas from tank and carb 3.) Rebuild the carb 4.) Replace spark plugs and wires (Spray...
Question
Holley 570 CFM for 454 engine
Going from a 350 to a 454 engine may require you to have the carburetor rebuilt to install larger main jets to get the engine to run good and have good power. A 650 carburetor would better suit the 454...
Question
I have a 1978 Toyota hilux with the 20r engine it has fuel in the oil is it possible that the engine just got flooded?
Hi DJ. Thanks for contacting us today. There are a few reasons why gasoline would mix with engine oil, ranging from gasoline leaking inside a vacuum line or a cracked intake manifold. I would change the oil and filter and...
Question
1978 CJ5 304 Engine stars back firing after it warms up after a long drive on the highway it stars backfiring
If the supply of fuel to the carburetor is reduced once the engine is hot, you might have a vapor lock condition. You might evaluate the location of the fuel lines and relocate as needed. Backfiring is often caused by...

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