Re: 1986 nissan 300zx timing belt replacement, cams...
The gears of the timing are marked with little indents on the gears and little dimples in the tin behind the gears on the cams and on the bottom gear (crank shaft) there is on the aluminum housing behind it the top is open and on the front side is a lip that only goes a short distance half inch or so and then it has a notch in that lip and goes back to the lip . thats the bottom timing notch . you line up the notch and the marks and its right ... turn the engin over twice and check it .. it should still be the same .. the timing belt needs to be only so tight so dont over do the adjustment .. half an inch of deflection at twenty pounds of presure .. measure it between the rear of the car cam and the tension adjuster .. half an inch should be measured as its more movement then normaly figured as tight i thought .. good luck .. paul in sw idaho
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Sounds like your water pump is bad and leaking, causing it to run hot.It is recommended to get a new timing belt when replacing water pump,these prices are without timing belt change.For the dealer's price is 555.00,for repair shop is 428.00,and for you to do it is 72.00,take door number 3.
Are you sure the new belt didn't jump time? How was the belt tensioner when you replaced yhe belt? Did your water pump leak onto or into your crank sensor?Are you sure you have proper fuel pressure?When you replaced the timing belt, did you make sure to find top dead center on cylinder 1 ? Just lining up the timing marks may not have worked if this is indeed what you did.If you had the crankshaft rotated 180 degrees, your motor would be trying to fire on the exhaust stroke, instead of the compression stroke. To find T.D.C. disconnect your battery,rotate your crankshaft until the piston that is marked #1 in your firing order is at the top of its stroke, this can be accomplished by carefully inserting a wooden or plastic dowel into the sparkplug hole of cylinder#1. The dowel will rise with the piston and at the point where it starts to fall will be T.D.C. Now your timing marks should line up,and you will then be on the compression stroke. good luck! hope this helps
Hello adeg222: My name is Roger and I will help you. The motor should be a 3.0 SOHC V-6 engine. The repair manual does not refer to this engine as being a interference engine. How ever if the belt breaks and you were driving the car. The likely hood of engine damage is greatly multiplied.Also the time called for to replace the belt is 8.5 hours.
Should you need further help please just ask. Please rate the quality of the answer. This way I know if it was helpful. Thank You for using Fix Ya. Roger