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Please can someone help me with the valve timing on a Fiat Siena EL

16 valve twin overhead cam engine code 178D

Posted by Dawn Byrne on

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johnny rebel

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How to install timing chain with timing marks both crankshaft and camshaft


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The vehicle is backfiring through the exhaust and won't rev up.


Hi,I dont know if this is a timing belt or timing chain,
but if it is the belt drive timing belt then its possible that it has slipped a couple of teeth so that when it fires on a serton cylinder when one of the exurst valves is still open cousing it to back fire through the exurst,
I would first set up the engine timing,make shore that the mark on the crank pully is lined up with the pointer thats on the engine block then make shore that the cams are both lined up with the marks on the head,if ok,then you can adjust the ignition timing,
you will already have it at top dead centre by sorting out the engine timing,so take the distributer cap off the rotor should be pointing at the number 1 cylinder so it should just be ready to fire,if that seems to be lined up ok,its not your timing.
so you will have to do a engine compression test to see if there is eneything wrong with the valves or piston rings(most of the time its the problem with the head)if thats ok,then it must be to do with a fuel problem if you have a good spark from sparkplugs.
all the best,hope this got the brain cells working hard so you can get to the bottom of the problem.

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How to remove the cylinder head on a jeep cherokee 4.7l


There are several configurations of engines; the older overhead valve conventional cam, overhead valve with overhead cam or cams utilizing chain drive, overhead cam engines with staggered chain drive, gear driven overhead cams and the most common belt driven overhead cam engines. Although each engine has its own specifications, developing the skills to remove Autocome cdp pro

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1 Answer

How to find and set timing marks for 2003 ford focus 2.0 16 valve with dual overhead cams ztech engine


I do not have a diagram but i do have a site with very detailed instruction on how to set the whole thing up correctly, just click HERE

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1 Answer

How do you m,ake sure that the camshafts in a 16 valve overhead cam in kia rio are timed correct i had them out and not sure hot they go , both pin up both pins down or 1 of each thanks


you will need a special tool to lock cams together when refitting the belt ,look at the cam lobes and this will tell you both valves on no1 will be closed on TDC no1 the lobes will point up and outwards with the exhaust getting ready to open next ,then look for the marks as i honestly cannot remember where they are as when i do any engine i turnt to TDC no1 and mark with white paint ,but twin cams need a special funny sort of tool to hold then in place ,if you dont have this tool then use a couple of pairs of molegrips WHATEVER YOU DO MAKE SURE YOU TURN ENGINE OVER BY HAND 360? to ensure valves are not hitting the pistons

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1 Answer

Trying to locate engine number to determine 16 0r 32 cam


Unfortunately, your question is very vague and hard to understand.

16 or 32 cam?
Usually your engine will have twin cams, or single cam.
Overhead cam(s) or not. You could determine if your engine
is a 4 or a 6 cylinder, and then you will generally find out how
many valves the engine has.

If you are in a 4 cylinder car, you probably have 16 valves if you have a twin cam engine.
If you have a single cam, 4 cylinder engine, then you will usually have only 8 valves.

The only way that you could end up with 32 valves, is if you have a dual overhead cam, v-6 engine.
Each head will have two cams, and each cylinder will have 4 valves then.

I hope that this is what you were trying to ask. :)

-Jackson
http://urbanscooters.com/

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Look at the 8th digit on the vin #
3 = Duel
P = Single

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