Fuel injectors

2002VolvoC70 · Post by **2002VolvoC70** » 20 Apr 2019, 09:25

Replaced all the fuel injectors and now a leak at the rail. I don't know if I am misunderstanding the process but the protector plate that keeps the injectors in place does not line up correctly to the fuel rail. *A notch under the electric connector of the new injectors doesn't fit firmly at the injectors. The injectors slightly wobble and the seal/O ring is completely in the rail. It's as if I have the wrong injectors (like the electric connector are reversed) What should I do?

Post by **oragex** » 20 Apr 2019, 12:00

I show some details here, hope it helps. That plate with an angle does slide on a notch on each side of the injectors

2002VolvoC70 · Post by **2002VolvoC70** » 20 Apr 2019, 13:26

I did follow these steps, however leak from the fuel rail. My thoughts are to remove and readjust

EngineeringBloke · Post by **EngineeringBloke** » 20 Apr 2019, 20:33

The fuel injectors have a shallow grove along 2 sides. The U-shaped cutouts in the retaining strip have to engage into that grove on all of the injectors, plus the adapter that holds the fuel line into the rail. As you tighten the 3 bolts holding that strip down to the rail, it is hard to see how the injectors could wobble.

1. The injectors are held by the strip.
2. The strip is held to the rail by the 3 bolts.

And you should be using a lubricant (Vaseline, oil or Superlube synthetic grease) on the o-rings, but the injectors have to be held firmly.

If you pull the rail out and post a picture, we may be able to quickly let you know what's up.

2002VolvoC70 · Post by **2002VolvoC70** » 21 Apr 2019, 01:00

Thanks I figured out that not all the o rings on the new injectors were fitting in the fuel rail tightly.

Post by **oragex** » 21 Apr 2019, 15:59

On each injector there are two o-rings of different size. The thinner goes at the injector's tip

2002VolvoC70 · Post by **2002VolvoC70** » 29 Jun 2019, 15:09

Problem solved, now I still have white smoke from exhaust. BUT WAIT!
Area codes 237 turbocharger boost sensor a circuit low 236 turbocharger boost sensor a circuit range performance 455 evaporative emission system leak gross leak no flow and 335 crankshaft position sensor
I replace crankshaft sensor position sensor cam sensor map sensor fuel injectors spark plugs ignition coil no warning on dashboard
No check engine light on dash no service engine light on dash.
Ran the car for over 40 minutes it did not overheat did not lose antifreeze did the glove test where you put oil in the car if try to suck the glove in.
during the 40-minute letting the car run I did notice a faint smoke coming from the back part of the engine in a location that cannot be seen from under the hood meaning the car needs to be jacked up to see where the smoke is coming from

Is this a turbo problem or a blown head gasket problem I must mention there is no milky solution on the oil cap. I have not changed the oil since I purchased the car and I do know that it is a quart low. Any suggestions my concern is the visible white smoke because the car drives great

tardcart · Post by **tardcart** » 29 Jun 2019, 17:54

well, drive it for a week and take note of what fluids are being lost. white smoke is oil or antifreeze. change the oil. if its a small head gasket leak of antifreeze the AC Delco tablets work great. But its hard for them to travel from the expansion tank so pull a hose and put 4 in. if its oil its turbo seal, valve seals or rings if very high miles.