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B&S engine 128T02-1270-B1 dismantled. How do I re-set the camshaft to get the correct valve timings?

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SOURCE: camshaft timing causes backfiring into valves

Make sure the mark on the crank shaft TDC indicator are correct. Remove number one spark plug use screwdriver to feel that the piston is at TDC by moving the crankshaft back and forward and checking the mark , there will be no movement of the piston with slight movement of the crankshaft when at TDC. Now turn the camshaft till the rear cylinder inlet and exhaust are just rocking . ( open and closing) Cam shaft gear should line up . Timing should be ok. Turn motor two complete turns and re check.

Posted on Mar 12, 2015


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Camshaft valve timing marks for Fiat Siena 1.6 16V, 1995 to 2002 model

there are no timing marks for camshafts you need a fiat tool to lock the cams rear of engine but if you mark the cam sprockets carefully before you dismantle you should be ok if not borrow the fiat tools the crankshaft marks are on the front pulley end about @aprox.10oclock position

May 27, 2015 | Fiat Siena Cars & Trucks

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How do you adjust valves on a 2006 3.5L V6 Toyota Avalon?

There is a Toyota Technical Service Bulletin issued for this:-
T-SB-0291-08 September 11, 2008 2GR-FE Valve Timing

Procedure Service Category Engine/Hybrid System Section Engine Mechanical Market USA Applicability YEAR(S) MODEL(S) ADDITIONAL INFORMATION 2005 - 2009 Avalon 2007 - 2009 Camry VDS(s): BK46K 2008 - 2009 Highlander 2006 - 2009 RAV4 Engine(s): 2GR VDS(s): BK31V, BK32V, BK33V, BK34V, ZK31V, ZK32V, ZK33V, ZK34V, ZK35V 2007 - 2009 Sienna Introduction This service bulletin provides information regarding valve timing inspection and service guidelines for vehicles equipped with 2GR-FE engines. © 2008 Toyota Motor Sales, USA Page 1 of 5 T-SB-0291-08 September 11, 2008 Page 2 of 5 2GR-FE Valve Timing Procedure Introduction (Continued) Figure 1. 3 2 1 5 9 8 7 6 4 1 RH Bank Intake Camshaft Timing Gear 2 RH Bank Exhaust Camshaft Timing Gear 3 RH Bank No. 2 Timing Chain 4 Crankshaft 5 Idler Gear 6 Timing Chain 7 LH Bank No. 2 Timing Chain 8 LH Bank Exhaust Camshaft Timing Gear 9 LH Bank Intake Camshaft Timing Gear Warranty Information OP CODE DESCRIPTION TIME OFP T1 T2 N/A Not Applicable to Warranty © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 3 of 5 2GR-FE Valve Timing Procedure Inspection 1. Set the No. 1 cylinder to TDC/compression. A. Set the timing mark to 0 on the timing chain cover by rotating the crankshaft clockwise. B. Verify the timing marks on the camshaft timing gears are in general alignment with the timing marks of the camshaft bearing cap: TIMING MARK IDENTIFICATION CYLINDER BANK INTAKE GEAR MARK EXHAUST GEAR MARK RH Bank (Bank 1) Small Mark Single Line LH Bank (Bank 2) Large Mark Double Line HINT When the engine is correctly timed, the timing marks will NOT perfectly align. Figure 2. Figure 3. RH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 4. RH Bank Intake Camshaft Timing Gear 2 1 1 Bearing Cap Timing Mark 2 Gear Timing Mark © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 4 of 5 2GR-FE Valve Timing Procedure Inspection (Continued) Figure 5. LH Bank Intake Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark Figure 6. LH Bank Exhaust Camshaft Timing Gear 1 2 1 Bearing Cap Timing Mark 2 Gear Timing Mark HINT If the timing marks appear vastly out of alignment, turn the crankshaft one revolution (360 ) clockwise and note the position of the timing marks. Component Removal Guidelines 1. If engine disassembly is required that involves removing the camshafts or timing gears, set the #1 cylinder to TDC compression, wipe away any oil, and mark the following items in relation to each other prior to disassembly: • Timing gears • Timing chain • Timing chain No. 2 NOTE This relationship MUST be maintained. The intake gear is timed in relation to the crankshaft via the timing chain; the exhaust gear is timed in relation to the intake gear via the No. 2 timing chain. © 2008 Toyota Motor Sales, USA T-SB-0291-08 September 11, 2008 Page 5 of 5 2GR-FE Valve Timing Procedure Component Removal Guidelines (Continued) 2. If NEW camshaft timing gears or the No. 2 timing chain are being installed, the two yellow links on the No. 2 timing chain can be used to ensure correct relationship between the intake timing gear and the exhaust timing gear. Figure 7. 1 1 Yellow Link A. Align the paint mark on the timing chain with the intake gear timing mark (to ensure the intake gear is correctly timed to the crankshaft). Figure 8. RH Bank and LH Bank 3 3 4 3 3 4 5 4 5 4 1 2 1 RH Bank 2 LH Bank 3 Yellow Link 4 Gear Timing Mark 5 Timing Chain Paint Mark B. Align the two yellow links on the No. 2 timing chain to the timing marks on

May 04, 2015 | 2006 Toyota Avalon XLS

1 Answer

How can i determined the timeng mark of the camshaft in the v6 kia cadenza there is 3timeng marks in one camshaft and this engine is four overhead camshaft

To ensure you don't get the timing expensively wrong I advise vehicle-specific information.

The additional marks could be marks for safe dismantling or assembly or marks for performing a valve timing check or perhaps a cam sprocket made for a variety of models.

It should be relatively easy to determine which mark to use, though you mention nothing about whether other marks are present and which cylinders are served by that camshaft.
Assuming other marks are present and having removed the spark plugs and exposed the valve gear the engine can be set at TDC on the timing cylinder and whatever other marks there is aligned, ensuring the valves of number 1 cylinder are both closed and the cams are in the compression position for that cylinder.

With the engine in this position the valves of the first cylinder in the second half of the firing order should be in the overlap position, which I think is number 4 (I don't have data to hand).

Setting No 1 and No 4 pistons and valves in this way should then indicate which of the three marks are to be used for timing, again assuming there is a static mark to align one of the sprocket marks with.

It isn't unusual for engines built by robots to require setting tools for subsequent maintenance and repair; in other words it isn't unusual for engines built by robots to have no timing marks at all...

Setting an engine timing by logic is really only suitable as an emergency procedure unless verified by TDC finder, degree discs and dial gauges along with valve timing information.
Manufacturer information is a much easier method.

Apr 19, 2015 | Kia Cars & Trucks

1 Answer

How install camshaft?


There isn't enough information to give you a good answer.

Installing a camshaft requires that you follow the valve-timing procedure, that you properly install the camshaft seal, and that you install the bolts in the proper sequence and set to the proper torque, usually in steps as described in the service manual. You would be best to use a service manual for the details. You can get an aftermarket service manual for your car at virtually any auto parts store or off the internet.

As far as the stripped or damages "screw", it really depends on what you mean here. If it is one of the screws that holds the camshaft cover in place, it is probable not a big deal. If it is one of the camshaft bearing journal bolts - it is a big deal. In that case, it will depend on how it is damaged and how badly. If the threads are slightly damaged, running a tap (probably a bottoming tap) down the threads may be all you need. If the threads are stipped out, you may need to insert a heli-coil which might even require removing the head.

I hope it is something simple and inexpensive.

Setting the Camshaft (valve) timing is not terribly difficult, but it is very important that it be done correctly. If you do it wrong, you can destroy the engine next time you turn it over with the starter if the valves and pistons collide. I don't know whether you have an "interference" engine or not - you didn't say which engine you have, but almost all Honda engines are "interference" engines [meaning there is not room for the pistons to clear the valves if the valves are open at the wrong time] If you have never changed a timing belt or set the camshaft timing before on anything, get someone who has to help you or leave it to a professional mechanic.

PS- Never change the timing belt without changing the water pump as well, and replacing the timing belt tensioner. These are easy to change when the timing belt is removed and it is a lot of work to change the timing belt. If the timing belt tensioner fails it is just as catastophic as a timing belt failure on an interference engine.

Jan 08, 2015 | 1996 Honda Accord

2 Answers

Hi, my 2004 G35 infinity has noisy VVT in left bank, I pulled out the cover and removed the VVT inner unit attached to camshaft without removing sprocket by undoing hex nuts using allen key. I bought a...

Assuming you get the timing correct before you start it, you wont bend any valves. Be sure that you have the proper timing set and turn the engine over by hand a few times to make sure it doesn't jump timing or bind up at all.

Mar 15, 2011 | 2004 Infiniti G35 Sport Coupe

1 Answer

What is the torque spec for the cam bearings on a 1998 dodge stratus with a 2.4 L?

Hi, the spec is 105 in. lbs. I have pasted the entire procedure below from
Thanks for using FixYa.

To install:
  1. Thoroughly clean the camshafts and related parts.
  2. The hydraulic valve lash adjusters are inside the roller camshaft followers. Make sure they are clean, well lubricated with clean engine oil and properly positioned. Install the camshaft followers in their original positions on the hydraulic adjuster and valve stem.
WARNING Make sure NONE of the pistons are at Top Dead Center (TDC) when installing the camshafts.
  1. Lubricate the camshaft bearing journals and camshaft followers with clean engine oil and install the camshafts. Install the right and left camshaft bearing caps No. 2 through No. 5 and right side No. 6. Tighten the M6 fasteners to 105 inch lbs. (12 Nm) in the correct sequence.


Fig. Fig. 3: Camshaft bearing cap tightening sequence-DOHC engines


Fig. Fig. 4: Camshaft bearing cap sealant application-DOHC engines

  1. Apply Mopar® Gasket Maker or equivalent sealer to the No. 1 and left side No. 6 bearing caps. Install the bearing caps and tighten the M8 fasteners to 250 inch lbs. (28 Nm). The end caps must be installed before the seals can be installed.
  2. Install the camshaft end seals.
  3. Reinstall the camshaft sprockets, if removed. Install the timing belt, taking care to make sure all timing marks are properly aligned, using the recommended procedure. Use care. DO NOT allow oil or solvents to contact the timing belt, as they can deteriorate the rubber and cause tooth skipping.
WARNING Verify that all timing marks are correct. If the timing belt or sprockets are incorrectly installed, engine damage will occur. Take time to make sure all timing marks are correctly aligned.
  1. Install the timing belt covers.
  2. Clean all valve cover sealing surfaces. Make certain the rails are flat.
  3. Install a new valve cover gasket. Apply Mopar Silicone Rubber Adhesive Sealant, or equivalent, at the camshaft cap corners and at the top edge of the 1 / 2 round seal.
Inspect the spark plug well seals for cracking and/or swelling, and replace if necessary.
  1. Install the valve cover assembly to the cylinder head and tighten the fasteners in sequence, using the following 3 steps:
    1. First: tighten all valve cover fasteners to 40 inch lbs. (4.5 Nm).
    2. Second: tighten all fasteners to 80 inch lbs. (9 Nm).
    3. Third: tighten all fasteners to 105 inch lbs. (12 Nm).

  2. Install the ignition coil pack and connect the spark plug wiring to the correct spark plugs. Tighten the coil pack retaining fasteners to 105 inch lbs. (12 Nm).
  3. Reconnect the engine ground strap.
  4. Check to be sure all vacuum lines and remaining wiring have been reconnected.
  5. An oil and filter change is recommended.
  6. Reconnect the negative battery cable and test run vehicle. Check for leaks and for proper operation.

Jan 07, 2011 | Dodge Stratus Cars & Trucks

1 Answer

Tears timing chain ajuster off nissan1989 four times

I'm assuming that you are talking about 1989 Nissan Truck 4WD 3.0L FI 6cyl.

In this models, the Z24i and KA24E engines do not use the pin counting method for finding correct valve timing. Instead, set the timing chain by aligning its mating marks with those of the crankshaft sprocket and camshaft sprocket. The camshaft sprocket should be installed by fitting the knock pin of the camshaft into its No. 2 hole. On the Z24i engine, the No. 2 timing mark must also be used.

Excatly, what is the problem? Adjuts timing procedure?

Sep 16, 2010 | 1986 Nissan Pickup 4WD 1986

1 Answer

Trying to set timing belt (new )

Be very careful with this timing belt change.
The key setting is to get the crankshaft and camshaft properly synchronized !
I believe this is an "interference" engine. If the crankshaft and camshaft are not set properly the valves will hit the pistons and be bent ! That would destroy the engine.

No you will not hear the valves hitting the pistons - you will hear the engine turning over faster than normal because you have lost compression.
The engine has marks on the gears and pulleys that will align with marks on the engine block at TDC which should be done before the timing belt is removed ! If you have did not do that and either the crankshaft or camshaft has moved, you have a problem. You can get a manual from the library, auto supply store, eBay or a manual seller.

Putting on the timing belt could use an extra set of hands- when you line up
the marks and the engine is at TDC, the injection pump has some spring tension
and will jump back one tooth. this means you have to hold the pump pulley in
place while putting on the belt. so an extra set of hands makes things much

Apr 26, 2009 | Toyota Highlander Cars & Trucks

1 Answer


The 3L 24V straight 6 engine has timing marks on the crankshaft pulley & on the camshaft pulleys. The crankshaft pulley aligns with a mark on the front of the block, the camshafts align with two marks on the plastic cover on the top. The ignition timing, the fuel/air mixture & the valve timing are not adjustable. The 3L engine is known as an "Interference" engine, in other words, if the cam belt breaks or is not set up correctly, the pistons 'meet' the valves, with dire consequences!!!!!

Nov 04, 2008 | 1995 Volvo 960

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