Question
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The text above is a follow-up to ...
-----Question-----
Hi, I wonder if yo can help please.
I have a Nissan Largo (import), it has the KA24DE engine (2.4i) A short while after buying we noticed a hesitation when pulling away, the revs drop slightly and there is no urgency so you have to really put your foot down to go anywhere, also it seems to struggle on hills.
I changed all the filters and spark plugs (all genuine Nissan parts) but the problem still exists, in fact it seems to be getting worse. As it is an import (we are in UK) we are struggling to find anyone who can diagnose the problem, and worse still as the engine is located below the front seats it's a job and a half to get to the engine so theres an hour labour before they have started!.
There also seems to be a smell of burning, I can only describe it as a smell of burning coal? and only really noticeable when the blowers are on. Not sure if this is linked to the problem?
Any advise would be gratefully received!
-----Answer-----
Ok. YOu have to check some basic things to get closer to the cause. You need to check fuel pressure, engine vacumm and spark patterns. Is this car a stick or auto trans??? If its an auto you may have a trans problem. Will it rev up in park with no load on the engine? If so then we can eliminate some things.
Hi, thanks for your reply. It's an auto box, and when standing the engine revs fine. I had a look around the engine and couldn't find any split pipes. The reason I changed the spark plugs was the probe on the old ones were more needle like (pointed), rather that being flat? They were totally destroyed, and I have been told this could be a timing fault?
AnswerKA motors were known for chain tensioner failures. If this was the case you would feel this all of time, even when reving the engine. Your problem is load related. Make sure there are no leaks in the air intake hose to the throttle plate. My next step would be to drive it in D2 and see what happens. I am assuming that you have checked all of the basic stuff ie: timing, idle, compression, enigne vacumm, ect.
