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K. Wiggins
K. Wiggins, ASE Certified Technician
Category: Car
Satisfied Customers: 2593
Experience:  AA in automotive Technology, 15+ years in the trade
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i recently bought a used 2003 honda cbr600f4i. first i had

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i recently bought a used 2003 honda cbr600f4i. first i had a cold hard start issue which i narrowed down to be leaking fuel injectors and a bad fuel pressure regulator. there was fuel in the oil so i changed the oil and filter and threw in a new set of plugs new injectors and new fuel press regulator.also drained the gas tank and put in some fresh 93 octane with some fuel injector cleaner. that seemed to fix the problem, but not completely. now when the bike is cold it still wont start right up, has like a 5 second excessive crank. when it catches and fires, it stumbles a little then slowly smoothes out. takes about a minute to smoothe out and once it does it blows white smoke that smells strong, burns your eyes. after about a minute or 2 of blowing white smoke it clears out and doesnt blow any smoke. bike will also start right up when warm. any ideas? im pulling my hair out trying to figure this thing out

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Customer: replied 3 years ago.
I will continue to wait a little while longer. If it goes um answered I'd like to cancel please. Thank you
Hello and welcome to Just Answer! It sounds like you have a slightly blown head gasket or possibly a cracked head. When it sits(cold) coolant is leaking into the combustion chambers and this is why there is extended cranking time and white smoke on start up. This is due to the engine having to "pump" out the coolant and get fuel in the cylinders to crank and blowing out coolant. When the engine is warm parts expand and there is no leaking. A coolant system pressure test will confirm this. I'm sorry I don't have better news for you regarding the situation.
K. Wiggins, ASE Certified Technician
Category: Car
Satisfied Customers: 2593
Experience: AA in automotive Technology, 15+ years in the trade
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Customer: replied 3 years ago.
it does make sense. But how would doing a coolant system pressure test confirm this? It's going to slowly lose pressure but I won't see where the coolant is going. Wouldn't it make more sense to use a sniffer over the radiator while it's running?
Customer: replied 3 years ago.
I'm gonna do a cooling system pressure test to confirm. I just don't understand y it hasn't been using coolant if that's the case. Which is y my mind is blown