I had to replace a cam and rockers on my 97 3.0 dodge caravan. its in time. we are on top dead center and the distributer in all lined up. still wont start! What could the problem be?

Take off the intake side, then set the #1 cylinder to top dead center. When you install the cams, set them close to where the marks should be. Alignment is critical when you put the belt on. After the belt is on turn the engine two revolutions by hand and recheck/reset your marks. Every time you reset it, turn the engine again and recheck marks.

fuse number 4 in the power distribution center under the hood on the drivers side.

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Make sure distributer is at Cylinder 1 at TDC (top dead center).

What gears are you talking about if it is the timing belt put the no 6 or no 4 piston on top dead center rockers are rocking and the mark on the harmonick balancer shows marks on top dead center and the over head cam has a mark on it to lines up with a mark on the timing cover mark.

HOPE YOU DIDN\'T TAKE OUT THE OLD ONE YET !!!!!!!!!! YOU MIGHT WANT READ UP ON THIS BEFORE YOU DO. BUT THERE ARE PROCEDURES, DISTRIBUTOR MUST BE MARKED, @ BASE/ENGINE BLOCK, USE PAINT, ROTOR MUST BE FACING #1 SPARK PLUG, #1 PISTON NEEDS TO BE SET @ TOP-DEAD-CENTER, ON THE COMPRESSION STROKE, NOT EXHAUST STROKE, IF YOU REMOVE THE VALVE COVER DRIVERSIDE IF V8, YOU CAN SEE #1 ROCKER ARMS. WHEN ROTATING THE ENGINE, MANUALLY W/WRENCH, BFW, BIG-FU-KIN-WRENCH, BOTH ROCKER ARMS WILL BE EVEN & LOOSE, IF YOU REMOVE #1 SPARK PLUG, THE TOP OF THE PISTON WILL BE @ TOP OF ITS STROKE, ALSO, TIMING MARKS WILL BE INLINE @ CRANKSHAFT DAMPER. @ 0, TOP DEAD CENTER. WHEN THIS OCCURS, YOUR @ TOP DEAD CENTER . DO YOU UNDERSTAND ???????? BY REMOVING ALL SPARK PLUGS IT WILL BE EASYIER TO TURN THE CRANK. ONCE YOU ACHIEVE & SATISFY ALL THE ABOVE PROCEDURES YOU CAN SET IN YOUR DISTRIBUTOR, ROTOR FACING #1 SPARK PLUG TERMINAL, THAT YOU ALSO MARKED, INSERT THE NEW DISTRIBUTOR EXACTLY LIKE YOU TOOK IT OUT, REPEAT, EXACTLY..........................GOOD LUCK!!!

check to make sure that the crankshft and cam gears were lined up correctly with # 1 cyl at top dead center.

the ryobi s430 has a hole in the timing wheel with ,perhaps a red mark on it or next to it like mine.lining that up with the piece at the bottom that goes straight down puts the cam lobes right at 180 degrees away from the rockers and readies the valvetrain for the compression stroke.if you remove the valve cover,which by the way has a really tough reusable gasket,youll see the cam and rocker arms.you want the lobes of the cams to be as fara away from operating the rocker arms as possible.next, you ll find top dead center to be not quite lined up, with respect to magneto edges and flywheel magnets.using a tiny screwdriver, you can put the tip in the spark plug hole not quite an inch and rotate the flywheel SLOWLY.being careful not to somehow allow the screwdriver to become pinched between the piston and cylinder(that spark plug hole is at a funky angle)at some point,youll fee fell the piston approach top dead center.youll notice there are a few degrees that the flywheel will turn before the screwdriver will fall back down,indicating travel has begun toward bdc(bottomdead center).you want the crank asembly to be set in the center point between when the screwdriver stops rising out of the spark plug hole to the point it just starts to fall back in.that should be close enough.my problem now is getting the timing belt OFF.mine is bad and I've torn down all the way past the flywheel.at this point,i can see the timing belt,but now there's this pressed bearing in the way that ive yet to figure out how to remove.viva la ryobi

Line up mark on main pulley with indicator, If you have a baffle over the rockers on cylinder number one, you will need to pull off that valve cover to ensure that neither valve is open- the vavle train will be resting on the heel of the cam lobes. This means cylinder number one is truly at top dead center, and distributor can be installed with the rotor in the correct location for factory designated cylinder number 1 location. ( it could fall anywhere, as long as the firing order is in the correct order- it just makes life simpler in the future.)

If one rocker or both rockers are pressing against the valve stems or followers, the engine is 180 degrees from top dead center for cylinder number one so the crankshaft must make one full revolution additional for number one to be at the timing reference top dead center for cylinder number 1 or you can simply position the distributor rotor for cylinder number 2.. This is because the crankshaft makes two full rotations for one full rotation of camshaft or distributor.

If you find you have lined up on cylinder number 2- which is 180 degrees away from cylinder number 1 in the firing order, you should have no problem if you make sure to locate number 1 in the factory designated location and use correct rotation direction when you pug the wires into the distributer cap.

The crankshaft gear has a center punch mark on gear and the intermediate gear has a line mark on gear. Rotate the crank until the #1 piston is top dead center. In doing so the crankshaft mark should line up with the intermediate gear mark. (crankshaft mark at 1 oclock and intermediate gear mark at 7 oclock). At the same time look at the cam gear and the small hole should be at the top and the two larger holes should align with the bearing cap. ((parting line should be looking at it will be 50/50 when you look at the front of cam gear). Remember to remove belt before timing engine correctly. Also make sure the negative wire is disconnected from battery before starting this job. Hope this will help you.

you need to re-do you timing belt and make sure the cam is aligned, there will be an arrow on the cam and another arrow for you to line up to, its called TDC (top dead center)..once thats lined up you can put the belt back and your timing should be better