QUOTE(Komptek @ Sep 3 2008, 04:33 PM)
No no oill change required. Try a injector cleaner. sounds like your injectors are not firing at 100% effiancy. Put in a fuel additive injector cleaner, that should clean it up. YOu should be using an injector cleaner about ever 10,000km or 7,500 miles. THe fuel out there today is crappy and dirty. unless you are using high octane fuel which already has a bit of the additive. than you can double the 10k 7.5K times.
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Komptek, please dont tell people this, this is highly misleading!
How can you isolate his problem with one post on the internet to his injectors, and then recommend injector cleaner, which could very well make his problem worse?
Hard starts can be caused by any number of symptoms!
bad grounds,
weak battery,
clogged fuel filter,
dirty or fouled spark plugs,
failing starter,
failing fuel pump,
clogged catalytic converter.
Dont even get me started on the emissions system.
short answer, if you still have your warranty, take it to the dealer. I wouldnt begin troubleshooting an issue like this without at least a manual of some kind. If you have a DVM, and simple test is to check your battery's voltage across the leads while cranking. You can also do a voltage drop test across engine and chassis grounds, and the ground for the starter. Both are very non-intrusive tests.
Its best to break this kind of issue down into 3 parts. You need fuel, spark, and air to start an engine. One of the 3 will cause the issue.
air - make sure you have no leak, intake portion,
spark - have to go through the charging system following the factory service manual. This will include from the battery to sparkplugs, and from the battery to the starter. Voltage test will usually be the first test, and voltage drop will usually be second which is why i suggested it.
fuel - I always trouble shoot fuel last because its the most intrusive. This would be the best place to follow the factory service manual.But it will essentially consist of following the flow of fuel from the tank to the engine. starting with the fuel pump, and ENDING with the injectors.
And if all of the above checks out fine, then its really time to get dirty with the DVM because emissions, and engine management sensors will be next.
This is very general, but the FSM will break this down and give you a concrete process to follow. Once I have my hard copy FSM, I am going to starting writing how-tos.