I need to know what happen when i put 3 new fuel injectors on my car and i leave the other 3 used?

no truck told
no year told
the answer is NO.
the injectors are matched 3 ways, (and more)
engine size and model.
injection controllers and tuned to the weight of the truck. and load.
start by naming where this engine sits.
none told.
no truck told or an end goal. at all.
just injector corundums.

I wouldn't give up on it, but I would sure be P.O.ed at the mechanic- $700 for a bad diagnosis. Why would he think 3 injectors were leaking? Was it running rich? Did he do a scan for trouble codes? Did he check fuel pressure?
Probably something minor-anything now should be minor after $700. Well, at least you got new fuel injectors. Have some tests done, scan for codes, check fuel pressure. Carefully clean the MAF sensor with maf cleaner spray, or at least a sensor safe spray cleaner. It is delicate, so use care. Let it dry thoroughly before putting back on. About all I can think of, good luck.

After a fill up, the fumes in the gas tank are very concentrated. If problem with evap system, it could cause problems after a fill-up. Just a thought.

Hello, How about draining the tank and putting fresh gas in? Change your fuel filter after you drain the gas from the fuel line. Do a fuel sample in a glass container and see if the gas separates. By now you may need to clean the fuel pressure regulator and the new Injectors may be clogged by the dirt in the system.

There is also a potential problem if someone used the fuel line bracket or fuel line as a ground when jump starting the vehicle. This is under the NHTSA bulletins. The fuel line bracket under the hood is a convenient place to hook a jumper cable. If someone did this, then the fuel line can be cooked by the jumpstart. The rubber hose underneath the Stainless steel lines can overheat if a jumper cable is attached.

To me, touching any part of a fuel line with an arcing power source is extremely dangerous. I would like to know if this happened to you and what the final repair was found to be on your vehicle.

emove the six reverse torx bolts from the fuel rail using an E7 star socket. You may notice that the paper fuel rail gasket is starting to or maybe already has broken between the intake ports. This will cause a lean code condition. (P0171 and P0174)
2. Gently pry the fuel rail off of the lower intake and the six injectors. Note the orientation of the injectors beforehand.
3. Remove all six injectors and discard all 12 o-rings.
4. Thoroughly clean all gasket surfaces and o-ring surfaces.
5. Clean the o-ring areas on all the injectors.
6. Put new o-rings on the injectors. A light film of motor oil on the o-rings will help in seating the injectors.
7. Put the injectors into the lower intake.
8. Put new paper gasket between the fuel rail and lower intake and make sure all of the injectors are seated into the fuel rail.
9. Put the six reverse torx bolts back in and torque them down in this sequence:
<Firewall 1 3 5
............ 6 4 2
To 12-16 N*m (9-11 lb*ft)

reassembly is the reverse of the dissassembly. after you get this done, get you a cold one. heck get two. you deserve it.

(you can let the children and small animals back in the area now)

Do you have a code for a misfire?

If a crank sensor goes bad the vehicle will typically not start at all.

If you have spark to all the cylinders than the next step is to either check compression or check the injectors. Usually the injectors will stick when this happens they will ohm out fine but will not spray fuel. To check them you will need either a high end scan tool or and injector tester and an fuel pressure gauge. The tester is connected to the injectors one at a time using the bulk connector near the alternator. The injector is then triggered by the tester as you watch for a drop in fuel pressure. Whichever injector does not drop fuel pressure when triggered is the bad injector.



I’m happy to assist further over the phone at https://www.6ya.com/expert/jeremy_d728a59f986299fa

You leave all coil pack connectors on their respective cylinders.
Usually the crank position sensor tells, the computer where the pistons are,by where the flywheel is,as it passes the sensor.
You leave all injector connectors in their number sequence.
Every vehicle uses different ways of pulsing the injectors. Not familiar with yours

Most likely NO,to the coils and injectors being tied together.
You can not spray fuel and try to ignite it, at the same time,it has to get into the cylinder and be compressed, one cycle before the spark.

You could switch injectors,and a relative did that, earlier this year, based on your theory. Sound thinking,a lot of work and not your problem.

Might add, that while your plugs may needed to be replaced,they had no effect either. Personally, never had a plug failure in 45 years,could happen I guess.

So you buy one new coil,start on one side of engine,and walk that coil from one cylinder to the next,every time you get a 300 misfire code. Put the OE back and move the new one. Consider you may have others on their way to going bad.

Make sure you have no vacuum leaks anywhere.

ihad the same problem.. its not the coils or anything like that.. and any reg mechanic wont know the prob unless they under vw.. u need to replace ur power output stage.. thats what cylinder 3 misfire is.. after i fixed it my car is good as new. i

I would talk to who cleaned the injectors, I don't know if it something they did or not. It could be a stuck open injector. The exhaust would have a raw fuel odor if it was. What it sounds like is a blown headgasket, which can just happen. The exhaust would have a sweet smell to it. Usually starts as a small leak (between cyl. 2 & 3), the engine burns the coolant while driving which you don't see. Then the coolant level gradually drops to a point where the car overheats, which warps the head, causing a large leak. Now you see the coolant burning (white smoke).
Good luck Honda Al

Hi This must be an air lock you need to undo the every injector slightly so a little fuel will come out once all are lose turn the engine over with the starter motor as each injector is showing signs of fuel coming out tighten each on up whilst still turning the engine over. Please leave me feed back: Malcolm Campbell, Thanks.