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Just completed a head o/haul,both came back with cams not installed,we dont have any specs on cam shaft timing or belt,believe has advance on rear head(could be wrong)please help 04/97 mazda eunos 800 v/6 sedan

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  • Mazda Master
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YOU NEED A REPAIR MANUAL ON YOUR VECHICLE GO TO AUTO ZONE OR ADVANCE AUTO THEY HAVE MANY CAR MANUALS.THEY HAVE ALL YOUR ENGINE SPECS.

Posted on Aug 25, 2010

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Cam bearings


Remove the rocker cover to ascertain the damage done . It may not be bearings but seized valve in the head. To fix cam bearings properly it may necessitate the head removal and machining both the head surface and then the bearings should be line bored to realign the cam shaft correctly. Some Nissan products have the cam bearing housings adjustable with shims to align the holes correctly and if not done will break the cam shaft. IT may be the cam shaft is broken and jammed . What ever it will not be just a case of putting in new bearings until you have the head and bearing alignment checked out by an engineering shop.

Jan 06, 2014 | Nissan Pathfinder Cars & Trucks

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How to replace front cam shaft seal in Geo Tracker,1.6 liter engine


remove tbelt (lots of steps see link)
remove front cog on cable( 8v head is diffr that 16v to lock it)
tell if 8v or 16v engine
then remove backing plate.
then the seal clamp.
the seals falls off.
reverse above
http://www.fixkick.com/t-belt/tbelt-index.html

there are links to the real FSM pages to, this page covers
every type of cam cog /belt failure there is.

or at head pulls seen here with skips
http://www.fixkick.com/engine/head-pull/head-pull.html
or hear start at step 8 to 12
then do step 14
then jump to 32. and stop
the cam cog bolt is RHT that is CCW takes it off
then remove the backpan , 10mmbolts and last the
seal clamp.

in short, all belts off, fan blade off.
timing cover (tbelt) off
timing belt idler stud and idler center bolt loose.
timing belt off
top cog bolt off (use locking method) ask)
backpan off
seal clamp off.

see how to time a cam , in link 1 above.

Jan 07, 2013 | 1994 Geo Tracker

1 Answer

How do i time my car with out a timing gun


A "timing gun" is used for setting the distributor/ignition timing when the engine is running. If you are trying to replace a cam timining belt, the timing mark for the crankshaft is on the REAR of the engine on the flywheel and the transmission housing. The cam timing marks are on the camshaft sprocket and you align them with the valve cover mating surface on the cylinder head./

Dec 26, 2011 | 1987 Honda Accord

1 Answer

I changed the water pump, timing belt and idlers and set all cams as instructed, now car won't start. What did I miss?


With the engine at TDC, the small mark on the crank sprocket and intermediate shaft sprocket for the cam timing belt should be pointing at each other (also along the C/L of the center of these pulleys). Then the cam sprocket has two little arrows (triangles) opposite each other that point at the center of two holes in the sprocket. You should line up these arrows with the junction of the #1 cam tower cap and the head (you will be able to see this clearly through those holes). Then install the belt without moving any of these. Start at the crank and work to the intermediate shaft, then to the cam. There should not be any obvious slack in the belt as you do this. Finally get the belt past the tensioner, tension the belt. If you do not have the tensioner tool, then the belt is properly tensioned when you cannot rotate the belt more than 90 degrees or 1/4 turn midway between the cam and intermediate sprockets. You should turn the engine over a couple of revolutions and recheck every thing. One more method of setting the timing belt tension is that there should be approx. 5/16" of deflection from center possible midway between the cam sprocket and the crankshaft sprocket, about where the head meets the block. Also, 90 degrees twist should just be possible midway between the cam sprocket and the intermediate sprocket. I pulled this from the Haynes book.
An easy way to check your cam timing without having to look at the engine sprockets, is to turn your engine to TDC using the flywheel mark, and look at your cam sprocket. Make sure the little arrows are lined up on the cam bearing seam. I use a mirror to get a straight look at it, since your head won't fit in there :)This will ensure cam-crankshaft alignment, and the intermediate shaft alignment is not quite as critical and and be a tooth or two off since it only times the distributor, which of course can itself be rotated when you tune-up your car.NOTE: After replacing the timing belt , turn the engine over a few times by hand and recheck the tension and timing mark alignment . Get your timing light, if it has an advacne dial, set it to 12M-0, if not set the timing to 0M-0, then shine the light into the little hole in the side of the timing belt cover. You should see a hole in the cam sprocket in there, if it's in the middle of the hole, cam timing is OK, if it's towards the front, it's advanced, towards the back, it's ******** a tooth. The timing belt is adjusted by a counter weight tool. Just the weight of the tool is all the tension you need. I check with a tool rental or parts store to see if you can rent one. There is very little tension on the belt, to much and it makes noise and to little and belt will jump. So if you can, find the tool.

Oct 10, 2011 | 1998 Subaru Forester

1 Answer

Is the front engine seal related to the time chain tensioner seal got a link behide the timeing belt


Don't quiet understand your question...but here's some insight.

The chain is under the valve cover/s ( 1.8t and some 2.8 V6.) and drives 2 or 4 cam shafts.

If it is the VR6 engine then the chain is in the front of the engine.

1.8t has seals on at cam sensor at rear of head and seals at front for crank and cam. To install it needs belt removed for front seals. 2.0 gas engine same except no rear cam seals.

All oil seals are now Teflon and a new instal procedure must be followed. Briefly : Installed dry...allowed to sit 4 hours before engine started.

Post again if this does not answer your question. We need year and model to give you a definitive answer.

Jan 12, 2011 | 2002 Volkswagen Passat

1 Answer

How to replace a broken timing belt


Daewoo has interference engines in them, so if the timing belt broke while the engine was running, you will need to replace half of the valves which were bent when the pistons crashed into them when the cams stopped turning and the crank shaft continued to turn. Minimum of $700-1000.00 (usually more). If you do it all yourself and the valve guides are not damaged, still at least $400.00 worth of parts to fix. Pull plastic air dams around bottom of engine on front and right side . Support engine with jack. Drain antifreeze from engine and radiator. remove air filter housing and serpentine belt. remove front engine mount. remove cam belt cover. remove broken cam belt and check cam tensioner bearings and idler bearing as well. They are usually bad. Then remove spark plug cover. Remove valve cover. Remove intake from head. remove coil from head. remove heat shield from exhaust manifold then remove manifold from exhaust and from head. remove water hoses and connecting assemblies from side of head and rear of head. remove Cam shaft bearing caps loosening them all evenly so as not to bend cams. remove cams. remove head bolts. remove head. remove valve hydraulic lifters, compress valve springs and remove valve retainers and dissassemble valves. Clean everything very well. Make sure head is not damaged. Remove valve guide seals. install new valve guide seals, new valves. Seat valves with valve grinding compound. clean well. instal valves in reverse order of dissasembly. Before putting head on, make sure number 1 cylinder is at top dead center position. install head using proper torque of 18 ft # in a spiral application rotation from the center outward in a clockwise direction. Then do spiral rotation again tightening bolts each one-quarter turn. Repeat the tightening process two more times only turning the bolts one-quarter turn each time. Use new head bolts. They are designed to stretch in the process of installation and are not to be re-used. Align cams to proper orientation then bolt into place. do not overtorque cam bearing cap bolts. Less than 5 ft # of torque can stretch these bolts. Snug them then tighten them 90 degrees. Then tighten them another 90 degrees (quarter turn). Snug them all then go back and tighten all of them a quater turn, then go back and tighten all of them another quarter turn. Install the cam idler and tensioner and install the cam belt. then install the intake, exhaust and all other items in reverse order of assembly. Do not turn engine over unless you are sure you have the cam belt on with the crank shaft pulley aligned at top dead center and the intake and exhauste pulley marks aligned to their proper marks with the cam belt properly tensioned. You can't be even one tooth off. This must be right before you turn the engine over! Remove spark plugs and turn engine over by hand two rotation clockwise using a wrench on the center bolt of the crank shaft pulley. Check that the timing of cams is still perfect. If not, correct, retension cam belt, double check timing positions again then rotate engine two revolutions. Check cam timing positions again. The timing should not change! The engine should turn over relatively easily. If it feels like it doesn't want to turn, don't force it. You may have the timing off and be pressing a piston against a valve. If you are at this point, then you need to remove cam belt and unbolt cam shafts to release all tension on any of the valves. return the number one cylinder to top dead center position and then reinstall the cams and cam belt. Once it is assembled and in time, then reattatch the rest of the components that were removed in dissassembly. Do this in reverse order of dissassembly. then connect battery and fill radiator fluid. Start car.

Aug 31, 2010 | Daewoo Nubira Cars & Trucks

2 Answers

I have 98 ford ranger 2.5 that broke the timing belt; What type of internal engine problems might I be looking at? I replaced the belt and did a compression test and have 0 compression.


Hello gandolfph: My name is Roger and I will help with your question. I have Alldata and Mitchell on demand programs. I looked at both and neither one says this is a interference motor. That is where the valves bend if the belt breaks. I would go back and make sure the engine is propperly timed. If the cam or crankshaft are not right your compression would not be right.You can also remove the valve cover and look at the valves closely. Look for any rocker arm that is not against the cam shaft. If the valve is stuck down and not touching the camshaft. then the valves were bent. Should you need further help please just ask. Thank You for using Fix Ya. Roger

Jul 20, 2010 | 1998 Ford Ranger SuperCab

2 Answers

Changed the water pump on my 1997 passport & now the timing is off.


I assume you are talking about valve timing not igntion timing. If that is the case your water pump maybe run by the timing belt. If it is you would need to completely disassemble the timing cover and set the number one cylinder to TDC (top dead center) on the Compression stroke not the exhaust stroke. Once you do that line the timing marks up on cam gears with marks on the side of the head. Then install a new timing belt and tensioner. It is a good idea to always change the pump and belt together. I would suggest buying a manual for your specific vehicle for specific torque specs and exact locations of components and procedures.

Dec 03, 2009 | 1997 Honda Passport

1 Answer

Need diagram or spec to set cam position


if you look at the back edge of the camshafts you will see a slot, this slot is off center on the shaft end, you are supposed to use a special tool and turn each shaft to where that slot is flat across the cylinder head, then insert the tool (flat piece of steel) into the slots, the tool hold the cams in place while you reset and put on the belt. You can find this diagram in any Haynes or Chilton manual, availiable at your local parts store, autozone should be able to print it out for you from AllData for free, hope this helps, let me know

May 28, 2009 | 1995 Ford Contour

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