1978 Chevrolet C1500 - Answered Questions & Fixed issues

If I understand the post correctly, kinda sounds like the firing order is off. Firing order should be 18436572. Could be out of time as well. That is where I would start.

1978 Chevrolet... | Answered on Dec 17, 2017 | 37 views

Did you check the starter and starter relay. If the starter is failing it will require more voltage than usual to turn over and start the truck. Heat soaking can also be a problem. Check the wiring to the starter and any wiring you reconnected when you replaced the alternator.

1978 Chevrolet... | Answered on Sep 19, 2017 | 286 views

This is not hard... you just need the tools.. autozone should have the loaners... get one of these...

Repair Manual Vehicle Maintenance

1978 Chevrolet... | Answered on Aug 02, 2017 | 25 views

If there's no oil cap directly on one of the valve covers (it may have a breather hose attached which connects to the breather element in the breather pan), then some models require adding oil through the dipstick. If this is the case, there should be a cap type dipstick instead of the standard "hook". There are 6 different motors (8 including variations) for your truck so no manual has the exact location of the oil cap. Best of luck and hope I answered your question.

1978 Chevrolet... | Answered on May 02, 2016 | 2,757 views

If it is a 4 barrel you need to run a higher octane than a 2 barrel. You need to check your timing and readjust your mixture and air flow.

1978 Chevrolet... | Answered on Mar 12, 2015 | 252 views

There are 3 separate belts, one for the alternator, one for the power steering and one for the A/C. You don't need a diagram, you just look at what groove lines up with what accessory and place the proper length belt on that set of pulleys.

1978 Chevrolet... | Answered on Aug 04, 2014 | 260 views

Basic task is to take the nut off the top of the joint, and knock the stem out of the knuckle or joint. You may need to use a pickle fork to get it to move.
Then you unscrew the end from the coupler.
Be sure to measure the length of the assembly before you remove it, you may need to have the front end aligned after the procedure.

1978 Chevrolet... | Answered on Jul 16, 2014 | 45 views

1979 chevy C1500
the vacuum setup varies,
by (california, Federal (USA) and export models)
where are you, or if in USA the under hood sticker shows if calif.or not.

if in usa, use the FSM (buy one used) or use alldata.com
on USA cars , (not sure starting year, this one is old) the vacuum
map is on the underside of the hood. (not not painted over,etc)

1978 Chevrolet... | Answered on Jul 01, 2014 | 646 views

here ya go

1978 Chevrolet... | Answered on Nov 05, 2013 | 45 views

Some things you can check. First, with the engine off, look down into the carburetor and quickly move the throttle. You should see a squirt of fuel. If not, the accelerator pump is bad. If that is OK, check the spark itself. It should bridge a half inch gap with no problem and should be healthy (have good "snap" and bluish color). If OK, check the two wires that run from the ignition module inside the distributor, down under the breaker plate.Often those wires can partially break or short to the housing...when the advance moves the plate it will cause a problem.
Only other thing I can think of is timing. That engine likes from 8 to 12 degrees advance (depends on fuel quality) if it's set wrong it can make it fall on it's face when you floor it. (bad chain can do that too).

1978 Chevrolet... | Answered on May 28, 2013 | 1,406 views

bad spring -bent hood-or bolts loosened on hinge -

1978 Chevrolet... | Answered on Mar 31, 2013 | 33 views

with vin number on motor and also on tranny

1978 Chevrolet... | Answered on Dec 27, 2012 | 125 views

As long as it is a carbureted engine , simply change intakes and install your four barrel . Yes it is computerized , but will not interfere with carb swap .

1978 Chevrolet... | Answered on Dec 24, 2012 | 122 views

fuel filter i would think.

1978 Chevrolet... | Answered on Dec 08, 2012 | 403 views

Check timing to make sure your plugs wires are ran correctly and that your timing isn't way off as this will cause it not to start.

1978 Chevrolet... | Answered on Nov 10, 2012 | 17 views

Yes it will bolt up fine.

1978 Chevrolet... | Answered on Aug 10, 2012 | 60 views

I would rebuild the carburetor or check the intake for vacuum leaks or leaking vacuum hoses, all these cause a lean mixture of fuel and that causes hesitation. The EGR valve opening to early due to a defective delay or other control device can also cause hesitation, disconnect the EGR to confirm the problem lies there and repair if needed

1978 Chevrolet... | Answered on Jul 15, 2012 | 111 views

gyver here , twenty year wrencher.. sounds like either you got the timing out on the distributor , or the timing on the crank and cam are off. if you know the timing marks were set cam at twelve crank at six the dist is out. common for guys to set cam and crank n marks one above the other but then you must rotate engine 360 degree before you set dist back into hole. pull dist up rotate 180 degree .let me know

1978 Chevrolet... | Answered on Feb 01, 2012 | 170 views

There are two bolts at the end of the hood on each side. All you have to do is loosen them up and slide the hood to where you need it.

1978 Chevrolet... | Answered on Nov 18, 2011 | 217 views

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