It depends on the year. It is not a fun job with the engine in the mpv. For a 95 You have to remove everything down to and including the timing chain cover. You will need gaskets for water pump, timing chain cover. If you have a plastic lower intake threaded fitting get a metal one. You will have to have a special puller and remove the harmonic balancer.

I used a wrench to lock the balancer to the frame bolt so I could remove it. Be careful not to damage the oil and crank and cam sensors.

The have to come off too. You will need to drain the antifreeze. The power steering pump and idler is a pain to remove. You would be best to remove the upper intake and replace those gaskets too. Take pictures of everything you take apart because each one is different. Make sure to get the idler and how it is installed. It is a pain. Replace the water pump since you are there. I bought a book, but it was not much help. Put a new seal in the timing cover.

buick 3800 timing chain

After that you can get to the timing chain. If it is broke the engine is junk. Does a buick park avenue have a timing belt or a timing chain in the engine?Isky camshaft grind. We sell wholesale to the public. If so, I would not suspect the timing chain first unless there's some trauma to the engine. Top: Used on '71 up and I suppose you could change it at or k miles but unless it is rattling or sounding loose then I would not worry about it.

Prices paid and comments from CostHelper's team of professional journalists and community of users. The Series II engine is a very reliable, efficient, smooth, durable and reliable engine as pushrods go. The gear teeth wore down to the point the chain slipped on the gear. My other cars with same engine were Buicks and oldsmobiles. This chain is much like a thicker version of a bicycle chain, which meshes with the crankshaft timing gear and camshaft timing gear. No other cam makes the power of the XPZ in aperiod.

Valve Timing Tutorial.

buick 3800 timing chain

Also if you set aside a little each month in a "car repair kitty" you will have a fund to fix things that go wrong. Oil pump while I was there, all new gaskets including intake, valve cover and oil pan gaskets. I have been the only owner and most of the miles have been on long interstate trips of limes or more. Enlarged oil passages in the engine block.

Source of Timing Cover Leak Found - Let this be a lesson to anyone doing this job.

I have miles on my car. The car started sputtering a while back, and then just quit running and wouldn't start. Once I finished car started up and ran fine for a day, parked it and now it won't start.

Get Yours Today! We have the best products at the right price. Disconnect and plug vacuum advance line at Vacuum unit. Without precise timing, which a good timing chain in good working order provides, the ignition and camshaft timing will not perform in the precise Series 2 Timing Chain Replacement - It's Alive!

This is a great cam upgrade and is streetable, however valve springs, modified retainers, Comp Cams OER -or- LS7 lifters, Rollmaster double timing chain, machined oil pump cover and PCM tuning is required.

Estimated Timing Chain Repair Cost. The pre Buick V-6 engines had an "odd-fire" timing arrangement, which resulted from having six cylinders in a degree V arrangement. The older 3. New timing chain and gears, complete exhaust, complete ignition with coils, module, plugs, wires cam and crank sensors.Does a buick park avenue have a timing belt or a timing chain in the engine?

Assuming a 3. If the timing belt on a 1. It is more likely to damage the engine if it is a timing chain, though. A timing chain is made of metal and a timing belt is made of a heavy duty rubber. That depends on the model year however, a timing belt or timing chain is generally found at the front of the engine.

The timing chain should last the lifetime of the engine. I would like to know the symptoms. In a Buick Regal : Both the 3. How do the timinh marks line up for buick ventury with a 6cyl engine. A timing chain should last the life of a engine. The smaller engines with rubber timing belts have service replacement intervals.

The timing chain is inside the passenger side of the engine. Asked By Curt Eichmann. Asked By Leland Grant. Asked By Veronica Wilkinson. Asked By Daija Kreiger. Asked By Danika Abbott.

Asked By Consuelo Hauck. Asked By Roslyn Walter. All Rights Reserved. The material on this site can not be reproduced, distributed, transmitted, cached or otherwise used, except with prior written permission of Multiply. Ask Login. Buick Park Avenue. Asked by Wiki User. Top Answer. Wiki User Answered The V6 has a timing chain. Related Questions.Located in the front of the motor, the chain is run through a series of guides, gears, and pulleys. There is also usually a chain tensioner that has the critical job of keeping the chain tightened within a specific specification.

Timing chains have made a recent resurgence over timing belts because the chains have a longer life expectancy. Well, most of them anyway. Like any component in your car a timing chain will eventually need maintenance of replacement. Owners of vehicles with these engines, like the Buick Enclave, have experienced issue due a stretched timing chain as early as 40, miles.

Signs of a Bad GM Timing Chain

Intake, compression, combustion, and exhaust are the four stages of the internal combustion engine. In order to achieve those stages over and over again, pistons and cylinders have to move in unison with the precision of a classical ballet. When the timing chain has slack it can throw the pistons and valves into more of an interpretive jazz dance.

It sorta works at first … you know, in an artsy way. But eventually pistons start misfiring, valve timing is thrown off, a trumpet player goes off key, and before you know it your engine is destroyed. Timing chain slack can be due to a defective chain tensioner, or the result of a worn out and stretched chain.

The most common cause of timing chain stretch is irregular oil changes. They lightened their stance slightly in with Customer Satisfaction Program which offered to reprogram the engine control module ECM in certain vehicles, like the Enclave. In NovemberGM released a special coverage adjustment C for timing chain wear in 2. Recently, you took your vehicle to your dealer to have Customer Satisfaction Program performed.

Your dealer reprogrammed the engine control module to prevent premature wear of the timing chain and the illumination of the Service Engine Soon light. Further analysis has shown that the reprogramming may not fully correct this condition for all vehicles; we, therefore, are providing you with additional protection for the timing chain.

Even though the engine design basically stayed the same, the coverage for Enclave owners was limited to the model year. Why so expensive? Additionally, a stretched timing chain will almost certainly damage other components that will also need replacement like cylinder heads, camshaft position sensors, O2 sensors, etc.

Maybe you've experienced this problem. Maybe you're concerned you will soon. Whatever the reason, here's a handful of things you can do to make sure it gets the attention it deserves. Major class action law firms use this data when researching cases.

Their focus is on safety-related issues. The timing chain is the conductor, controlling the timing of all those moving parts. The engine will start to misfire as combustion timing is thrown off. You might find metal shavings in the oil as small bits of the timing chain fall off or shavings accumulate as your camshaft gets scored by the chain. It could also cause dreaded oil sludge.

In the worst case scenario, pistons smash into the valves, bending them resulting in catastrophic engine failure. The most common codes owners see when experiencing timing chain issues are P and P Compensation was also offered to owners who already paid for timing chain repairs. OK, Now What? File Your Complaint CarComplaints.I have a Buick Regal withmiles. I have been the only owner and most of the miles have been on long interstate trips of limes or more.

The car is quiet and runs great. Does anyone have experience or knowledge you are willing to share?

Buick 3800 timing chain

Keep in mind it will say miles OR months, whichever occurs first. So to answer your question, you need to do this the manufacturer prescribed intervals, to keep bad things from happening. This vehicle has a timing chain not a belt. The manual does not make any comments regarding the timing chain in the scheduled maintenance section which goes tomiles.

I understand timing belts need changing but I thought chains were permanent unless they made a lot of noise. Wait till it gets noisy. Timing chains thankfully very rarely break without warning audible. They can cause a lot of damage breaking. You are correct. When a timing chain stretches past a certain point, it will cause noise and driveability problems. Timing chains rarely break, but, after time, will stretch to the point were it may jump a tooth. Back in the days of distributors, it was easy to check the slop of the timing chain by rotating the crankshaft back and forth, and measuring the angle of lag-time between the corresponding rotor rotation.

Now, you gotta pull a valve cover and observe the lifters or camshaft. Thanks for the info. The car is very quiet now but if the chain begins to fail will the noise be obvious? What kind of noise should I be listening for? A streched timing chain will make a rattling sound that varies with engine speed. Sometimes a streched chain will break a tooth on a timing gear and then all heck will break loose in your engine when the little bits of metal start to get into some bad places such as oil channels.

If the chain gets streched, it may jump time and then the car will stop dead and you will scratch your head wondering why. Parts are cheap and labor is expensive, but a grand is a bit much for this job. Oh, and if you change the chain, you ought to change out the gears and the tensioner at the same time, and check the cam bearing wear while you are at it just for chuckles. Great advise. Right now it is quiet at all speeds even at 70 mph on Interstate I will keep my ear open and save your advise.On most GM vehicles with V-8 or V-6 engines, a metal timing chain is used to connect the camshaft to the crankshaft.

This causes the camshaft to move in synchronization with the crank, causing the camshaft to open and close the valves in the proper sequence and duration for the intake, power stroke and exhaust cycle. Because of this, pronounced slack in the timing chain can have a direct effect on the performance and fuel economy of the engine. A worn timing chain introduces slack into the connection between the camshaft and the crankshaft. This causes the valves to open and close later than normal, resulting in reduced cylinder pressures and uneven firing of the fuel mixture.

This can be felt as misses and uneven idling. A worn timing chain may cause the cylinders to be unable to fully fill with a fuel and air mixture, reducing the amount of energy they can produce.

This will slow down the response of the engine when the accelerator is depressed, and result in less power. A timing chain that receives sudden damage or extreme wear due to overheating or lack of oil may break teeth off of the drive gears on the camshaft, or jump positions on the gears. This can result in a severe loss of power, very poor idle, and the camshaft and crank becoming so far out of synchronization that the engine will not start.

A clattering noise coming from the front of the engine can be caused by a loose timing chain contacting the timing cover, or slapping against the gears on the crank and camshaft. A timing chain making noise like this is most likely near failure. A loud popping hear under the hood is known as a backfire. A worn timing chain can cause this by allowing the timing of the engine's firing sequence to become so out of sync that the intake valve remains partially open during the power stroke, allowing the ignited fuel mixture to escape through the intake manifold.

A worn timing chain can be diagnosed by using a timing light to observe the relation of the timing marks on the timing cover with the marks on the crankshaft balancer. If the marks move back and forth in relation to each other instead of remaining in a steady position while the engine is running, the timing chain is most likely very worn.

This article was written by the It Still Works team, copy edited and fact checked through a multi-point auditing system, in efforts to ensure our readers only receive the best information. To submit your questions or ideas, or to simply learn more about It Still Works, contact us.

Abrupt Performance Change A timing chain that receives sudden damage or extreme wear due to overheating or lack of oil may break teeth off of the drive gears on the camshaft, or jump positions on the gears.

Clattering Noise A clattering noise coming from the front of the engine can be caused by a loose timing chain contacting the timing cover, or slapping against the gears on the crank and camshaft. Backfiring A loud popping hear under the hood is known as a backfire. Identification A worn timing chain can be diagnosed by using a timing light to observe the relation of the timing marks on the timing cover with the marks on the crankshaft balancer.Due to shipper and supplier delays, your order may take longer to arrive.

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buick 3800 timing chain

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