blow back through carb - Kawasaki Vulcan Forum : Vulcan Forums
 
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post #1 of 5 (permalink) Old 10-07-2016, 06:40 PM Thread Starter
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Year/Make/Model: 98 Kawasaki Vulcan classic
Displacement/CC's: 800
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blow back through carb

Annyone know if its normal for air to come back through the carb if spinning the engine over with a ratchet? It runs fine besides needing to be tuned a little better and has 165 psi in both cylindersn
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post #2 of 5 (permalink) Old 10-08-2016, 11:29 AM
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It is normal for an intake valve to close after BDC, so I suppose that if cranked over with a wrench, some blowback might be norma,l depending on camshaft profiles.
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post #3 of 5 (permalink) Old 10-08-2016, 12:23 PM Thread Starter
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Year/Make/Model: 98 Kawasaki Vulcan classic
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Ok cool thanks. My timing chains are stretched and im going to replace them, along with some a couple other internal parts
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post #4 of 5 (permalink) Old 10-08-2016, 01:14 PM
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If you are taking it apart, go over the valves and valve train VERY carefully as 800's have been known to drop valves.
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post #5 of 5 (permalink) Old 10-08-2016, 02:40 PM Thread Starter
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Join Date: May 2016
Location: South Jersey
Year/Make/Model: 98 Kawasaki Vulcan classic
Displacement/CC's: 800
Color: Black
Gender: Male
Posts: 46
I will defiantly go over the top good. When I bought the bike, the po dropped a valve. He didnt know the valves had to be checked. The top has about 10,000 miles. The bottom has around 60,000. I knew the timing chains were stretched when I did the top. I just wanted to get it together and ride. I knew they would be ok for a little bit. Most likely going to sell it after I freshen it up. I love the bike but im looking for more power. Really wish we had more options in the performance world like you do with a sportster.
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