I have chevy s10 blazer 4.3 liter engine i cant get a answer...

Answer by nick
Submitted on 12/23/2004
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Not all 4.3 engines have adjustable ignition timing. Some have crank-fire ignition; timing is entirely controlled by the onboard computer. Thus there is no user adjustable timing. Check a Haynes or Chilton manual. If you do have adjustable timing, be very careful about a specific sequence required to set the timing. Once again, check a manual. Depending upon the type of fuel injection, there have been problems with certain fuel injection units (located in the plenum). These problems sometimes cause engine miss and poor performance which is very difficult to diagnose. An engine miss may store a trouble code in the computer. If the Service Engine Soon light on the dash is on while you drive, get someone to read the codes with a scanner. Also, check with a dealer to see if this particular year/engine code has a TSB (technical service bulletin) for this problem.

Answer by Bob
Submitted on 3/2/2006
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Go to Advance Auto Parts or Auto Zone and have a free scan done. The result will most times tell you exactly what is wrong.If the destributor has been out,reset the timing by putting # 1 cylinder on TDC with the line on the front pulley aligned with the pointer (careful, there two lines on the pulley). If the gear on the bottom of the distriubutor has been removed, it has a mark and can be put 180 degrees out. Install the destributor with the rotor bug pointer exactly where # 1 is on the cap. This will put the engine back in time, there are no adjustments. If you get it back only 1 tooth off, there will we a check engine light. If the gear on the bottom of the distributor is installed 180 degrees out it will be 1/2 tooth off and still give a check engine light and the scanner will say ignition timing problem.

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Question by jay
Submitted on 7/7/2004
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I have chevy s10 blazer 4.3 liter engine i cant get a answer on my timing mark when setting with a timing light also my engine has a miss in it i cant get rid of. i've changed the plugs, wires and egr valve i also change the fuel filter but it was last summer.i dont have the veci label on the fan shroud anymore.can any one give me some advise on these problems. thank you

Answer by countryboy
Submitted on 9/8/2004
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Did you check your cap and rotor? I changed my rotor once and didn't seat it right and it burned up the contacts bad after about 40 mi.

Answer by jay
Submitted on 10/9/2004
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is it efi, or carb?, if it is carb, check your power valve in carb (carb cleaner will work, sounds dumb but i was a victim of the same

Answer by Patric7378
Submitted on 11/5/2004
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Have you replaced the egr or just tried to clean it?

Answer by Shorty909
Submitted on 11/21/2004
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send me your email adress iwill send u a copy of the label i own a 1989 s10 sport chevy blazer 4.3 aut. 2dr lic247@msn.com

Answer by bgbassman@earhlink.net
Submitted on 12/24/2004
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your timing set at 0 with the gray wire on the right side front floor board at middle and top of carpet. a one wire conector is to be un pluged then start engine and set timing to 0 degrease turn off engine reconect wire and clear codes.if you could give more info what ops it has like auto, 5 speed, z or w engine code i might be able to help other problems

Answer by none
Submitted on 12/28/2004
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check your dist. gear mine was worn half way on one side

Answer by Prez
Submitted on 1/9/2005
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Most 4.3 liter engines have a timing set of 0 degrees BTDC. You get this reading by unhooking the EST distributor bypass wire (usually located underneath the passenger side carpet uptowards the fire wall). It is a one wire connector, orange w/ black lead. After unhooking the wire, set the timing at 0 degrees. Shut engine off and reconnect the wire. Unhook the negative battery cable to clear and codes. The distributor will self advance itself at next start-up.

Answer by jimmy
Submitted on 3/7/2005
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change rocker arms and rockers now for the timing dont use a timing light adjust the timing by turning the distibuter cap

Answer by beaz
Submitted on 3/21/2005
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check ignition module or coil pack

Answer by B. Farmer
Submitted on 3/23/2005
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You are not going to adjust the timing on that depending on the year. It has an automatic timing advance in the ECM. d You miss as well if you have the Vortec engine could be from the fuel injection. What is called the spiders inside the plentum. There are a lot of a causes for a miss in a 4.3 if I had more descriptive information about your engine ie year, if it is injected or a TBI motor.

Answer by roadrunner
Submitted on 5/19/2005
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what do you mean by not getting an answer on your timing mark? I am presuming that your timing light is operational and that you have properly attached it to the #1 plug wire which is the front left (driver side) wire?

Answer by dljudge
Submitted on 5/29/2005
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chevy new batt. new alt. truck won't make a sound when i turn the key

Answer by Terry
Submitted on 6/20/2005
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I have a '94 Blazer w/4.3 Vortec and have same problems. I changed everything I could myself and finally had it put on a machine which said I had a bad valve. Actually, a valve guide was shot and #5 cylinder was about dead. I'M NOT IMPRESSED WITH THIS ENGINE AT ALL. Good Luck!

Answer by jr
Submitted on 8/6/2005
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i had a 1997 s10 4.3 i was having the same problem i tried every thing it turned out it was the coil they seem to go bad quite a bit good luck with that

Answer by joe
Submitted on 6/3/2007
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Not much information there. What year, does it have the cpi fuel system? Miss could be a number of things assuming you've replaced all the vacuum hoses, etc, I would suspect problem with leaking fuel inside the plenum, just take it off and inspect, also they are known for fuel pressure regulators going bad. Might consider the back yard fix of valve seals on the engine with the compressed air or, as I did, use a piece of rope to hold the valves open. Takes a couple days but no mo oil fouling. Your timing is probably at 0 deg. , believe its the large notch on the pulley. Disconnect the brown jumper first to disable the est.

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Answer by mighty mouse
Submitted on 10/1/2005
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check the valves 1or2 might be burnt

Answer by gobull
Submitted on 10/4/2005
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you have to un plug the wires at the distributer and set the timing to zero. then pug wires back in and computer adjusts it.

Answer by bill
Submitted on 12/28/2005
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the chevy 4.3 doesn't have a timing mark the computer adjust your timing (check your codes for other problems)

Answer by aff
Submitted on 1/24/2006
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if this is a vor tec eng. its the gaskets ! under the intake ....

Answer by Ronnymac
Submitted on 2/12/2006
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distributor cap rotary button spark advanced module

Answer by luke
Submitted on 4/7/2006
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try replacing the fuel injectors

Answer by Rufino
Submitted on 4/16/2006
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the crankshaft must be turn twice to check if you have the number 1 piston up or the piston no 4 and your timing will be set better, it will run with the piston no 4 but it will iddle rough, try this it may solve your problem.

Answer by tmoney
Submitted on 5/1/2006
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you should buy a jeep

Answer by dave
Submitted on 5/17/2006
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chech the computer wiring and ground wire connection at the thermostat housing. These wires are week and can cause trouble if not grounded right. Have you replaced the distributor cap and rotor? plugs gaped right? Correct heat range? Check cooling system and make sure the temp is around 195f. Chevy engines dont like cool thermostats.

Answer by achucky16
Submitted on 5/23/2006
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check your fuel system and clean it flush it out something is stuck in it.

Answer by amado
Submitted on 8/13/2006
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im not no pro but if youve done all that maybe its your carb. the only reason im saying is becausei hade that problem too

Answer by Sherrie1983
Submitted on 8/20/2006
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Hi Jay, You might want to check your harmonic balancer for OTHER timing marks. There are THREE of them on a 2.8. You may be using the wrong mark. Just a thought. Sherrie

Answer by 1223
Submitted on 9/30/2006
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penis poop

Answer by etech
Submitted on 11/7/2006
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Many of the late model cars can not be manually timed. They are strictly computer controlled. This allows the engine to accept more than one level of fuel.

Answer by Heartbeat1991
Submitted on 1/2/2007
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make sure there are no trouble codes, no check engine light. . disconnect the timing wire, location depends on the year or your vehicle, if there are 2 timing marks on the balancer, use the second one it comes to.

Answer by hammer
Submitted on 2/26/2007
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dude just change the distributer, i have a 2000, on 22's, it had the same problem, 100 bucks for a rebuilt dis. and thats it. just make sure you know what u are doing, you could be a tooth out, just check it twice,m later man

Answer by bryan
Submitted on 2/27/2007
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check your intake for a crack of your fuel meter.

Answer by jesse
Submitted on 7/14/2007
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try replacing the distributer cap and rotor.