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1968

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Question
What is wrong with my transmission? 1968 Chevy Impala
Hi there. It sounds like the transmission forward clutch plates are slipping. First check the fluid level and fluid condition by putting the dipstick fluid on a clean white towel and seeing if you see what looks like sand in...
Question
Pulling during deceleration
Hello. I would check for uniformity of tire pressure in all four tires. Check for brake drag and failure to release at each wheel. A likely cause is an alignment or frame issue. Check that camber is within FSM specification...
Question
3 speed column trans problem.
Hi there, thanks for writing in. The shift linkage should first be checked to make sure it is going all the way in gear. Sometimes these vehicles had problems when motor mounts broke and it would not go into gear....
Question
Will turn over but won't start - 1968 Chevrolet C10 Pickup
Hello. You need to see if you have power to one side of the coil and blinking power on the other side when you crank the engine. If you do and no spark comes out of the coil, then replace...
Question
Trouble installing front suspension stock springs
Hello there, thank you for asking about your 1968 Chevrolet Bel Air. There are some pretty good spring compressors on the market now, made from servicing modern struts. I really like the half circle style that comes with a few...
Question
I think the motor is having a starting issue. New battery, separate solenoid, and put in a new starter. Are all the cables good?
Hey there. The starting system has to turn the engine over at a certain minimum rate (RPM) in order for the engine to catch and run. If there is no voltage drop between a new fully charged battery and the...
Question
I have oil smoking out of my oil dip stick and oil filler on my valve cover. Lots of smoke coming out of my PCV valve
Hey there. Worn piston rings create more crankcase fumes (i.e. the smoke you see coming out of breather tubes and orifices). This is called "blow-by". As long as the PCV valve stays clear, and the engine can handle the fume/clean...
Question
1968 Ford Mustang has an intermittent surge at idle
There are only two things that can cause this problem in this engine. One is the distributor timing jumping up and down due to worn out components inside the distributor. The other problem may be that the carburetor is not...
Question
Vacuum linse hooked up backwards on the engine.
Hi there. The vacuum hose to the valve cover is not to be under engine vacuum but rather under throttle vacuum. The lines on the valve cover are for ventilation only from leaking combustion gasses. The brakes will work very...
Question
car wont start dont know if it is the starter or bad wiring, or a bad ignition?
Hi there. If you are working on an older OEM Impala, it's more likely than not that the wiring is your problem. In some cases, when you try to start the vehicle and you get a single "click", it's caused...
Question
M-20 Transmission
Hello, thank you for your question. The website www.Davids4Speeds.com is a principal authority on these transmissions. According to the owner, (David West; Tel: 262.513.8331), the partial Vehicle Identification Number (28U160593) that you submitted decomposes as follows: The first digit "2"...
Question
I changed a brake booster and after driving the brakes seized up, any idea why
Brake bleeding would not be relevant in a circumstance of "sticking" brakes. If all 4 wheel cylinders are failing to retract, after replacing a booster, a typical cause is maladjustment of the booster push rod as it enters the master...
Question
Blowing oil through valve covers.
Hi there. Check the positive crankcase ventilation valve (PCV) and see if it's plugged up. Also, check the engine oil and make sure that there is the proper amount of oil in the engine. Too much oil or a sticking...
Question
Car turns on, runs for a bit but then turns off
Hi There, It sounds like you may have a fuel supply problem in getting the proper amount of fuel to the carburetor. The fuel pump siphons fuel from the gas tank and pushes it to the carburetor when the engine...
Question
Will not start
If the last symptom is failure of the motor to turn, you just want to confirm that by removing the spark plugs and ensuring the manual transmission is not engaged. If you still cannot turn the motor by hand using...
Question
Stuck in reverse.
Hi. It sounds like you may have some bushing o shift linkage issues keeping you from getting in reverse. You should see if you can put the transmission into reverse manually. You do this by disconnecting the shifter from the...
Question
I have a 1968 Chevy Custom 10 truck with the original 327small block engine it was running great until I tried to turn it off and
Hi there. When the engine continues running after turning off the ignition switch, it typically is due to a failure of the ignition switch, ignition relay or the ignition lock cylinder. It could also be a faulty ground wire causing...
Question
which rear end will swap with 68 olds ninety eight?
Hi Shamar. Thanks for submitting your question today. Although we appreciate the inquiry, it's not exactly the type of advice we offer here at YourMechanic.com. We try to stick to OEM service, maintenance and repair tips for cars, truck and...
Question
three speed on the tree can't shift into all the gears can only get into 2 reverse or 1 and 3rd gear
It is possible that the shifter linkage could be damaged. I would recommend having your vehicleinspected by a qualified professional to determine the exact cause of this issue.
Question
My engine immediately goes to max throttle when i start it. It is a carburetor engine and i think its a vacuum leak but not sure.
This may be a sign of a vacuum leak. High idle speeds or in some cases rough idle, stalling and hissing sounds are common signs of a vacuum leak. When a vacuum leak is present in an engine, this causes...

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