Question about 1994 Oldsmobile Cutlass Supreme

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Don't know how to line timing marks

I have went to replace a timing belt on a duel overhead cam 3.4 v-6 and the timing marks are missing on the cam gears on one of the heads. It apears they were never marked! What do I do?

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  • Brett Naugher
    Brett Naugher Nov 28, 2008

    On my 1994 Olds Cutlass (3.4 DOHC) We must reset the drive sprockets on the Overhead cams without keyways. The crankshaft has a hidden timing under the crankshaft drive sheave that must be set to TDC. How must we lock the Overhead cams (4) in place while the belt is put on?



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SOURCE: timing chain gear marks up or together and spark plug diagram wir

put the dots together, pull out num 1 plug bring num 1 piston up too top dead center on compression stroke,

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SOURCE: 1999 Alero overheating

Could be both your water pump and thermostat are faulty. Start with the simple and replace the thermostat and also did the engine over heat while you were stopped or in stop and go traffic, if you were then you may have a blown fuse or bad cooling fan relay that needs to be addressed. Check to make sure your Cooling fan is working, you can test this buy turning on your A/C on full and the fan should come one the same time your A/C clutch activates. If the fan does not function, inspect the electrical system to the cooling fans and replace the thermostat to ensure there will not be any issues in the summer time. Thermostat are know to go bad when they are over heated.
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SOURCE: Had to replace the intake

It sounds like your 180 out On a four stroke it can all line up but If you are not on the compresstion stroke on # 1 cylinder you will have this problem You have a 4.3 vortec correctI have the same thing in my blazer and i have a bravada engine in it its a 98 but there almost excatly the same You did the intake manifold so you had to take the distudtor shaft out As long as you didn;t remove the timing chain this is what you need to do to fix this Remove the distubtor shaft take out the plug from # 1cylinder first one left side when faceing engine Take scoket that fits the bolt for the hormonic balancer i think its 5/8 ths Start to bar the engine over stick your finger into the plug hole in # 1when you feel pressure your coming up on the compresstion stroke you need to get the piston to the top Then your good to go Im not going to waste a lot of typeing because you already know how to do this just re do what you did before and it should work fine And you knon you can;t adjust the timing on this engine manualy and don;t ever let this engine over heat one time is all it takes thats why you had to do the intake manifold there is not enough bolts to hold it down so they made the cooling system huge so keep an eye on the radiator and cooling system you should have now problems

Posted on Nov 18, 2010

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