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Question -
I have a 76 gmc camper with a 350 4 barrell engine. This is in a Camper. The camper seems like it has pleanty of power pulling,but the camper is smoking out the tail pipe continsly while driving but it smokes the most going up hills.I think the smoke coming out sme4lls like oil.No water noted in the oil. I added lucas oil stablizer in new oil. I put new spark plugs and wires. engine also stll acts like it wants to stall out going up hills but usally gets on up them. I notice a small pecking sound in engine but it is not very loud..Any ways the smoking worries me of what it could be for the engine sat for 2 or 3 years that i know of.It has some oil blowing into carborator through hose coming up out of engine.
Answer -
OK, Answer me this question: When you are going down a long hill with your foot OFF the accelerator (coasting) and when you get to the bottom of the hill and step on the accelerator is there blue smoke being emitted from the exhaust for several seconds ?. If there is you in most cases have either hardened valve stem seals that should be flexible rubber but due to the vehicle sitting for such a long period of time this tends to harden the valve stem seals and allows oil to go past the seals and run down into the cylinders thus causing blue smoke from the exhaust.
This is also sometimes evident when you first start the vehicle in the mornings and usually lasts a few seconds to a minute or two.
There is also the probability that the oil ring on the pistons are not expanding against the cylinder walls also due to this long period of time that the vehicle sat without being run.
Since valve stem seals can be replaced rather easily using the proper tools, I would replace all 16 of them and see if your problem is subsequently improved. The oil rings on the pistons may free-up by themselves over time.
Let me know.
autohelp the camper seems to be smoking most of the time, while it is idling or running down the road, but gets even harder when you go up hills. when you change valve stems do the heads have to pulled of or are the under the valve covers. It,s been a while since i done any thing like this to an engine. Also I have an 89 S-!0 with an 4.3 engine and the brake light will not go out. It started out as an solid light, and now it is flashing in a repeat pattern. Brakes work fine and do not leak fluid,Should i Be Concearned with it.It done this for 7 or 8 months now and i drive the truck usally 100 miles a day.
AnswerNo you do NOT have to pull the heads to replace the valve stem seals. There is a special inexpensive tool that you can buy at most all parts stores, Just ask for it.
1. remove both valve covers.
2. Remove all 8 spark plugs.
3. You will need an air compressor and hose.
4. Remove the shrader valve from the hose end that screws into your spark plug hole. This valve looks exactly like a tire valve stem valve.
5. Purchase an ENGINE COMPRESSION HOSE of which will screw into your spark plug holes and attach the other end to your air compressor.
6. With the air compressor running at about 80 pounds (PSI) and your above said hose attached to the air hose and threaded into one of the spark plug holes, Do NOT forget to remove the schrader valve, You will now, Due to the air pressure being in the cylinder it will hold both the intake and exhaust valves CLOSED. Simply use the tool to depress the intake valve spring and remove the 2 small metal valve keepers fron the valve stem and slowly release the tension of the valve spring and remove it with the special tool attached, Sometimes the spring may come loose from the tool so don't get alarmed if it does come off.
With the valve spring off you can see the valve stem seal as the valve will NOT fall down into the cylinder as long as you maintain the 80 PSI of air pressure into the cylinder at ALL TIMES. Repeat this process with the remaining valve stem seals.
DO NOT FORGET to move the hose assembly to EACH cylinder as you perform this operation on both valves of each cylinder.
If you FORGET to move the air source to the cylinder your working on and you remove the valve spring the valve will in most cases fall into the cylinder and you will have to pull the head to retrieve it.
This is a very easy, Take your time and THINK about what your doing and you will have no problems.
Just don't forget about moving the air source from cylinder to cylinder.
As to the BRAKE light, Which brake light are you referring to ?. The one that the car behind you sees when you step on the brake pedal when coming to a stop or are you referring to the brake light RED indicator on the dash panel ?.
If you are referring to the brake light RED indicator on the dash, This is a very well known problem of your year and make of vehicle as there were manufacturing problems within the ABS braking system and the ABS celectrical controllers were being replaced, If this ABS system is applicable to your vehicle. Check with your Chevy dealer, You might get it fixed for FREE.
Sometimes it takes a few hours to answer all the questions I get on this board. This is because I have no staff and or any help with answering these questions, I do it all by myself as a hobby and my coputer is 10 yaers old and upgrading is not within my retirement budget.
autohelp
autohelp
