Thursday, September 22, 2011

Helpp! How do I adjust distributor bolt? Car running rough and bad MPG. Timing angle? Nissan?

Hi, please help!



My distributor adjusting bolt is all the way to the left side of the car (viewing it if you were inside the car facing forward, meaning the LEFT side of the car). The bolt was not like that before the mechanic replaced the timing belt. How do I change it back to the original position? The original position was in the middle. Do I need to take off the distributor or any other component?



I was told once by a mechanic that the bolt has to do with the firing angle and the power the car can give in every cycle. If my bolt in my nissan is ALL the way to the left (to the battery side, the driver side), does that mean its %26quot;advanced%26quot; or %26quot;retard%26quot; the timing? How do tell if its either one or the other?



I read in an article of another nissan car, that if the bolt is exactly in the middle, thats the closest you can get to STOCK TIMING.



My car lacks power...and the MPG is horrible! Thats why I replaced the timing belt, plug wires(seiwa), spark plugs (denso), air filter, fuel filter, engine oil, transmission oil/filter.



yet, the car is still feeling rough...Can the bolt be the problem?



the history of the problem in my car is:



1. Tried to remove a plug wire to replace spark plugs(NGK) but the wire got ruined, it split.

2. Bought new plug wires (SEIWA, same as stock).

3. The car was still lacking power.

4. Changed spark plugs (NGK, properly gapped).

5. The car lack power...

6. Replaced engine oil.

7. Replaced air filter. Still lacked power. mpg was ugly!

8. Took it to a mechanic.

9. He replaced the timing belt(with 82K miles on it, the manaul says to replace it at 60K), fuel filter, transimission oil/filter. The Distributor adjusting bolt was MOVED all the way to the left, yet he told me he didnt touched THAT bolt!! Fortunately I took pictures before taking it to the mechanic, and yes...the bolt was in the center before taking it to the mechanic.

10. Replaced the O2 sensor.

10. The car was still lacking power He checked the spark plugs....and said they were OK.

11. I told him to clean and check th fuel injectors (maybe one of them was faulty).

12. He checked/cleaned them, told me that they were OK...

13. Now..he said that the problem was the spark plugs....he replaced them with DENSO.

14. The car still feels ROUGH when pressing the pedal. And also sounds ROUGH. Also, lacking power since Ive driven the car for 3 years now.

15. Now, Im thinking about adjusting the distributor bolt....MAYBE thats the problem.



In conclusion, Im guesing he did NOT adjust PROPERLY the timing in the QUEST. Maybe one of the points mentioned before was the problem, but when he replaced the timing belt, he could have missed maybe a tooth of the belt/sprocket...Yet he says the belt was properly replaced!



Do I just need a socket wrench to adjust the bolt? What is the normal procedure when doing this? Do I need to set TDC piston 1? Can I do this while the engine is running? Should I hear for SOMETHING when adjusting it? Is the center position the best one? STOCK?



PLEASE HELP!!!!



1993 Nissan Quest GXE V6 VG30EHelpp! How do I adjust distributor bolt? Car running rough and bad MPG. Timing angle? Nissan?
IF YOU WANT THE BOLT BACK LIKE THE ORIGINAL, YOU NEED TO REMOVE THE TIMING BELT AGAIN AND ALIGN THE NOTCHES OR TIMING MARK. IT WAS NOT ALIGN. AFTER THAT ,YOU NEED A TIMING LIGHT TO ADJUST THE IGNITION TIMING IN ORDER TO GAIN THE HORSEPOWER BACK.Helpp! How do I adjust distributor bolt? Car running rough and bad MPG. Timing angle? Nissan?
Could be the timing belt is off a tooth or two, and the distributor had to be offset in order for the engine to run. If you are sure about the distributor position before the belt replacement, I would have reason to question proper belt replacement.Helpp! How do I adjust distributor bolt? Car running rough and bad MPG. Timing angle? Nissan?
You need a diagram to check the timing belt. Look it up at the link I provide.

The timing belt effects timing, so you need to get that right first.

That will change a bit as a belt stretches with age or a new one installed, but not that much.

So the belt timing is probably off.

Not hard to change once you loosen the tensioner.



As for the distributor timing, the idea is the timing belt turns the inner shaft, so if you loosen its hold down and rotate the distributor body, it will change when the sensor in the body will pulse from the shaft lobe. With a strobe timing light inductively around spark plug wire 1, the light will flash the instant 1 gets spark. This will freeze the image of where the timing mark was at that instant. There will be a perfect timing mark, (probably around 5 degree before top dead center, on the crank pulley), and you will see it move before or after that as you rotate the distributor body. (with vacuum advance hoses disconnected if the instructions say to). Then you retighten the distributor hold down.