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techtalk:ref:svcproc20 [2019/04/01 15:23] ixl2relax [Test Each Cylinder for Compression] |
techtalk:ref:svcproc20 [2019/10/16 22:18] ixl2relax [Test Each Cylinder for Compression] |
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| * The extra two plugs (on dual plug heads) need to remain in place during this test. ((IXL2Relax of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005378)) | * The extra two plugs (on dual plug heads) need to remain in place during this test. ((IXL2Relax of the XLFORUM http://xlforum.net/forums/showthread.php?t=2005378)) | ||
| * If you can't disconnect power to the coil, ground out all the plug wires. | * If you can't disconnect power to the coil, ground out all the plug wires. | ||
| - | - Clean the area around the spark plugs and remove them. ((79-85 HD XL/XR FSM pg 3-10)) | + | - Clean the area around the spark plugs __BEFORE__ you remove them. ((79-85 HD XL/XR FSM pg 3-10)) |
| * If you haven't disconnected the coil, you can insert the plugs into the plug wires and press the plugs against the cylinder heads for grounding. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=48311)) | * If you haven't disconnected the coil, you can insert the plugs into the plug wires and press the plugs against the cylinder heads for grounding. ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=48311)) | ||
| - Connect the compression gauge to the first cylinder. | - Connect the compression gauge to the first cylinder. | ||
| - | - Make sure the throttle plate (and choke, if present) is fully open before turning over the engine. | + | - Make sure the **throttle plate is fully open** (and the choke, if present) before turning over the engine. |
| - | * If using a CV carb, hold the slide up. ((aswracing http://xlforum.net/forums/showthread.php?t=26208&page=2)) | + | * If using a CV carb, **hold the slide up.** ((aswracing http://xlforum.net/forums/showthread.php?t=26208&page=2)) |
| * If the cylinder can't freely pull in air, the compression reading will be low. | * If the cylinder can't freely pull in air, the compression reading will be low. | ||
| - | * Do NOT pull the enrichener knob - The enrichener is mis-named a choke but it is not a choke plate. | + | * **Do NOT pull the enrichener knob** - The enrichener is mis-named a choke ('86-'06) but it is not a choke plate. |
| - Crank the engine continuously through 5-7 compression strokes. (until there is no further increase in reading at the gauge) ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=48311)) | - Crank the engine continuously through 5-7 compression strokes. (until there is no further increase in reading at the gauge) ((IronMick of the XLFORUM http://xlforum.net/forums/showthread.php?t=48311)) | ||
| - Record the readings at the end of the first and last strokes for this cylinder. | - Record the readings at the end of the first and last strokes for this cylinder. | ||
