At Fixya.com, our trusted experts are meticulously vetted and possess extensive experience in their respective fields. Backed by a community of knowledgeable professionals, our platform ensures that the solutions provided are thoroughly researched and validated.
Reinstallation of cylinder head on 4d56 deisel engine
Why is it after reinstalling a cylinder head on a deisel overhead cam engine, I experience a hard start, rough jumpy running, exhaust's thick white smoke and is very noisy..? tell me what did I miss here... please thank you
Possible injection pump timing one tooth off or cam timing off a tooth is most likely situation Possible injection pump timing one tooth off or cam timing off a tooth is most likely situation
AnonymousMar 16, 2014
Blue smoke out exhaust when I start motorBlue smoke out exhaust when I start motor
- If you need clarification, ask it in the comment box above.
- Better answers use proper spelling and grammar.
- Provide details, support with references or personal experience.
Tell us some more! Your answer needs to include more details to help people.You can't post answers that contain an email address.Please enter a valid email address.The email address entered is already associated to an account.Login to postPlease use English characters only.
Tip: The max point reward for answering a question is 15.
That is an overhead cam engine - a separate cam on each cylinder head. Remove the valve cover on the side with no compression and see if the cam is turning.
Buy a chiltons manual that's specific the the cyl heads your trying to remove. I'm guessing your talking about heads on a car ? By not including a make, model, year , engine size , diesel or gas, overhead cam, naturally aspirated, turbo, fuel injected, carbureted there is no way to answer the question you are asking. Your biggest concern should be on how to reinstall them. Reinstalling heads are far more complex than removing them. All heads are different in the pattern in which they are tightened down ( to prevent warping ) . A specific amount of torque must be applied to each bolt. Some bolts require thread sealant because they pass through the water/coolant passages in the engine. Failure to do that will result in water leaking into you combustion chamber thus ruining your engine as well as your new head. Also the thickness of the head gasket must be correct because to thin or to thick of a gasket will change your engines compression ratio . The gasket thickness can also change your cc's in the combustion chamber. A gasket that's to thin can also allow the exhaust or intake valve to hit the top of the piston on the compression stroke. If your dealing with an overhead cam or dual overhead cam engine then the proper setting of the camshafts when reinstalling the head or heads is crucial . The above only pertained to gas engines. If you have a Diesel engine then things change dramatically . The pressures in the cylinder head combustion chamber area on a Diesel engine is unbelievable . One small mistake or oversight on reinstalling a head on a Diesel engine can be catastrophic .
There are several ways to time the cam to the crank. Be sure to check the manual before you install the timing chain or belt.
Some timing sprockets are properly timed when the marks face each other.
On others, there must be a certain number of chain links between the marks.
Sometimes chains have colored links that must be aligned with the marks on the sprockets.
Some overhead cams have a mark on the cam gear that lines up with a mark on the cylinder head when the timing mark on the damper is at the TDC mark.
Align the timing marks for the camshaft and crankshaft sprockets before removing the timing belt or chain.
If the old parts are available, carefully compare the new gears or sprockets with the old ones. Check the keyway and timing marks just in case there might have been an error made in manufacturing. Sprockets are sometimes stamped backward. Its much better to find the problem during assembly, rather than waiting until problems show up after reassembly and reinstallation.
Maintaining Valve Timing
During a valve job, it is essential to keep the timing chain or belt in place to maintain correct valve timing. Position the number one cylinder at TDC. Some overhead cam engines use a single long chain for a cam drive. The chain can be wedged against its guides with a tapered block of wood. the chain tensioner on some ohc engines must be wedged to keep the chain in position during cylinder head removal. courtesy of nissan motors.
Some engines have a lower and upper chain. These engines do not require special attention to wedging the chain. Be sure to look for hidden head bolts and check the repair manual before removing the OHC head.
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
The head gasket is in between the cylinder head and the engine block. The sly has a single overhead cam engine. This head is know for being porus and allowing oil into the coolant. If this is the problem your having than the only fix is to relace the head. Replacing just the head gasket will not help unless there are other circumstances that ruined the head gasket.
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. :)
i think you are reffering to a 4D56 engine. just type 4D56 workshop manual .pdf download on your browser and you fill find several free downloads. everything you need to overhaul the engine is there
Possible injection pump timing one tooth off or cam timing off a tooth is most likely situation
Blue smoke out exhaust when I start motor
engine problem
ijection pump rotation, advance or delayed timming...
×