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Was it a bad decision buying a 03~07 NISSAN SKYLINE 3.5L coupe  from a used dealer .?? Been doing allot of repairs lately o2 sensor camshaft sensor sparks break pads new disc oil filter air filter and can a cracked air filter housing cause engine light to appear should he have fixed these issues before selling it .?? It’s running much better since these things have been done but still concerned even my fuel consumption is bad how do I fix this issue.??

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Did you pay to have a full mechanical inspection on the car prior to purchase? If not, then yes, you made a big mistake. Second hand cards are buyer beware - what you bought is what you bought. If you didn't bother/pay to find out the cars full history prior to purchasing, then sorry to say, but fool you.

Getting a full service done by a qualified mechanic may help your fuel economy issues, but generally your right foot is the thing responsible for bad fuel economy. These are not terribly economical cars at the best of times though - the power they make for the size of unboosted engine is quite amazing imho, and the penalty for this is bad fuel economy.

  • Like 1

I checked the history I paid for it and it said everything was fine no issues there but I’m pretty sure it needs a tune up trying to find someone in Melbourne who knows these cars
it only has 130,000 kilometres on it and it’s make is 2003 does that seem right has it been wound back .? 

Edited by Xandersavage
1 hour ago, Xandersavage said:

I checked the history I paid for it and it said everything was fine no issues there but I’m pretty sure it needs a tune up trying to find someone in Melbourne who knows these cars
it only has 130,000 kilometres on it and it’s make is 2003 does that seem right has it been wound back .? 

I could be wrong but i'd believe so. 99% sure thats wound back. Unless you have the original import papers that tell you the kms at auction then its hard to know. You can pay for the ODO check though. its about $90usd for the full one and they supply import papers.

 

Also reset your ECU (disconnect battery for 30 mins) then plug it back in and drive like a grandma for like 20-30km. Worked wonders for my v36 economy.

  • Like 1
4 hours ago, Xandersavage said:

I checked the history I paid for it and it said everything was fine no issues there

While it's good you did at least that, it is not the same thing as a full mechanical inspection, which is what Nightcrawler was referring to. History checks won't tell you anything about how well the previous owner looked after it, when it was serviced nor who serviced it. If someone were to purchase my vehicle, they'd find no service history documented at all for the simple fact I'm a DIY kind of guy. The car could have been in zero accidents and yet still be riddled with mechanical faults.

6 hours ago, Xandersavage said:

I checked the history I paid for it and it said everything was fine no issues there but I’m pretty sure it needs a tune up trying to find someone in Melbourne who knows these cars
it only has 130,000 kilometres on it and it’s make is 2003 does that seem right has it been wound back .? 

Not much in the way of tuning you can do. Pull out a plug and if it looks old or the gap has grown to 1.2mm or more get a new set of plugs.

it all sounds like normal maintenance items, which probably were not done by previous owners. plus the usual model specific issues. cant expect an old car with that much mileage to be perfect

Edited by junkie

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