Question about 1981 Yamaha XJ 650

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THANKS FOR REPLYING,I HAVE 90 LBS COMP.IN EACH CYCLINDER SO I FEEL VALVES OK,SWITCHED PLUGS WITH SAME RESULT

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Is the camshafts timing correct? I assume your carbs are cleaned and adjusted properly.

Posted on Jun 28, 2009

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How do I post a reply to an incorrect answer?


Hi, you have been replying to the answer left to your original post!

Jan 25, 2015 | Cars & Trucks

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Dosen't start cranck ok i change comp on dash sais


One thing to check: the Neon SOHC engines have a design flaw where the pin that aligns the timing belt sprocket to the camshaft shears off. The sprocket can then slip but still appears to be lined up properly. On later models the engine control software detects this because the crankshaft and camshaft sensors are out of sync and the result is that it can shut down the ignition and fuel injection but not set a code (not enough run time). Verify by taking out plugs and checking compression. If the camshaft is out of time, compression will be low. Also, valves can be bent if the sprocket slipped too much. This is the problem I had.

May 15, 2011 | 2001 Dodge Neon

1 Answer

Looking for head bolt troque spec for 3.4l impala sfi04


Please don't forget to rate. Thank you:

Left side front cylinder head


98e175a.gif
Cylinder head bolt torque sequence-3.4L engine

  • Cylinder head by aligning it with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Left side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).


  • Right side rear cylinder head:


    71cd5b7.gif
    Cylinder head bolt torque sequence-3.4L engine


  • New cylinder head gasket
  • Cylinder head on top of the gasket and make certain it is lined up properly with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Right side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).
  • Spark plug wires
  • Exhaust crossover pipe. Torque the fastener to 18 ft. lbs. (25 Nm).
  • Valve rocker arms and pushrods. Torque the fastener to 89 inch lbs. (10 Nm). Using a torque angle meter torque the fastener an additional 30 degrees.
  • Lower intake manifold. Torque the bolts to 115 inch lbs. (13 Nm).
  • Upper intake manifold. Torque the bolts to 18 ft. lbs. (25 Nm).
  • Nov 26, 2010 | 2004 Chevrolet Impala

    1 Answer

    My brother in law did my front brakes last week but a friend of his told him he should torque the calipers mounts at 90 or 95 lbs. which is more than what he did but before he corrects this, i'd like to...


    Hi Friend: Yes you should Torque the Caliper Mounting Pins Not 90-95 But torque them a 80 FT. Lbs. This is the Recomended Specifications;

    Please Vote for the Quality of Help i've Given You! And If you would write a Short Testamony for Me. Thanks Have a Great Day !

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    Jun 30, 2010 | 1997 Oldsmobile Cutlass Supreme

    2 Answers

    Head gasket torque specifications and sequense


    Please don't forget to rate. Thank you:

    Left side front cylinder head


    98e175a.gif
    Cylinder head bolt torque sequence—3.4L engine

  • Cylinder head by aligning it with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Left side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).


  • Right side rear cylinder head:


    71cd5b7.gif
    Cylinder head bolt torque sequence—3.4L engine


  • New cylinder head gasket
  • Cylinder head on top of the gasket and make certain it is lined up properly with the dowel pins
  • New cylinder head bolts coated with a sealant (such as GM 1052080). Torque the bolts in the proper sequence (1-8) to 37 ft. lbs. (50 Nm). Using a torque angle meter turn the bolts 90 degrees in the proper sequence.
  • Right side exhaust manifold. Torque the bolts to 12 ft. lbs. (16 Nm).
  • Spark plugs. Torque the plugs 11 ft. lbs. (15 Nm).
  • Spark plug wires
  • Exhaust crossover pipe. Torque the fastener to 18 ft. lbs. (25 Nm).
  • Valve rocker arms and pushrods. Torque the fastener to 89 inch lbs. (10 Nm). Using a torque angle meter torque the fastener an additional 30 degrees.
  • Lower intake manifold. Torque the bolts to 115 inch lbs. (13 Nm).
  • Upper intake manifold. Torque the bolts to 18 ft. lbs. (25 Nm).
  • Mar 06, 2010 | 2001 Chevrolet Venture

    1 Answer

    How electronic ignition work.can we put single cylinder electronic ignition in twin cylinder.


    Hi sonpmayank
    The single coil ignition system works on a twin cyclinder 4 stroke motor by sparking every revolution. In other words, whilst one cyclinder is on a power stroke, the pother has just started an intake stroke, and so both spark plugs can fire together every revolution using a single coil.
    Happy to answer any questions you may have about this. Thanks for using FixYa
    regards robotek

    Jul 10, 2009 | 2000 Enfield Bullet 350

    2 Answers

    I have taken the head off the engine and need to known how to find TDC on the compression stroke, with the head off? Hyundai Accent 2000 Model 1500cc.


    Hey..my name is Keith..i'll try to answer your question..and the way to find TDC is to take your valve cover off..and find the valves and rocker arms to your #1 cyclinder..then ya rotate the crank til the markings on the harmonic balancer says its at TDC...then you grab the rocker arms on the valves..and if the intake valve and exhaust valve has no pressure on it..then you know you are on #1 cyclinder at TDC..if not..keep rotating the crankshaft until the #1 cyclinder valves has no pressure on them..i hope this has helped

    Jun 29, 2009 | 2000 Hyundai Accent

    2 Answers

    Pairing


    Many thanks for replying to me regards BT150 headset pairing solution. Just to let you know i continued my search and found the answer further on in your web site.thanks again for your reply

    Mar 02, 2008 | Jabra BT150 Wireless Headset

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