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best advice is to have a turbo fitted by an accredited turbo specialist shop. They will have the equipment, knowledge and chips available to tune the engine on a dyno to pass regulations. They will also be certified to fit the modification plate to the vehicle to keep you legal.
has to do with air intake, turbo stuck or damage or the sensor that detects the amount of movement may be faulty, intake swirl flaps dont open or has broken and got in the engine. do a compression test first.
The system has to see a wide range of conditions before a smog test can be done. On most brands you have to drive at least 50 miles, at various speeds including stop and go, let it idle for 5 - 10 minutes, and run at freeway speed for at least 25 miles. It also has to reach normal operating temp of 195 degrees.
According to the information that I have (which is extremely limited because Volvo does not like to give up such things) neither the 2.4L, 5-cylinder or the 2,5L Turbo 5-cylinder engines are equipped with downstream air injection. Therefore, there would be no "smog pump". Why are you looking for it?
White smoke is caused by engine oil being burnt. If your vehicle is turbo charged then it is most likely the turbo bushes that are worn, allowing oil to escape into the exhaust system. This can also be caused by worn piston rings but is unlikely on a vehicle of this age unless it has overheated badly in the past. To check turbo, remove main intake pipe from turbo. Check for excessive movement on impeller shaft in turbo by moving it up and down. To check piston rings carry out a compression test or if you have the equipment a cylinder leakage test will give you a better indication of cylinder condition. If the Turbo is at fault it will need to be reconditioned or replaced. Check oil feed pipe to turbo for blockage or restriction [common fault].
Cold air intake and straight pipe. Baffle would be a smog pipe. Looks like long bullet pipe. I would just use this and no muffler. Or get turbo muffler, and no cat or no smog.
Sounds like the turbo seal is leaking just from the symptoms but the blue smoke can also be valve guides or valve seats. It can also be the piston rings that have seized to the piston body.
It is time to save yourself a $75.00 shop charge and buy a compression tester. (make sure you have the Diesel compression test adapter also) Then check the compression on all cylinders. If the compression is good then your looking at either turbo or cylinder head repairs. The blue smoke is telling you it is time to do something as it will be sitting on the sidelines come the next SMOG test.
either modulator valve on transmission or intermediate and high gear band is worn out or vavle body is dirty.this should not affect smog test results..chris
Not a solution: This is my problem...
I needed to get my car smogged, but the check engine light was on. Took to to a local smog station that had replaced a sensor for me in the past in order to pass smog. They could not fix it. Put car in dealership garage for repairs and to date, the transmission module sensor (computer) went out and the ignition sensor was out also. The mechanic replaced both and now the code P1702 comes up. What does that code mean? My car still won't pass smog....
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