OM606.962 Valve Float @ raised boost?
OM606.962 Valve Float @ raised boost?
03-15-2019, 02:43 AM
#24
(03-14-2019, 10:35 AM)Ecto I think i had a similar problem like you.That hammering id due to air trapped in pump elements...in high output pumps . Most do that .
After reading your thread about your fuel delivery system i am pretty sure i know whats causing the problem.
First: the original lift pump is garbage. The pressure output oscilates and has quite high peak pressures which causes oscilating engine sound on idle.
Second: I had only bad experiences with a check valve on the suction side. It can cause steaming an bubbling inside the lines when the flow is high. And thats exactly what I am thinking is happining to you. When your lift pump pumps more and more fuel, the fuel starts to "boil" inside the suction lines which causes gas inside the lines. This gas causes retarded timing and less fuel being injected.
This problems were happining in low gears, i think due to the higher acceleration the ball inside the valve wanted to close the valve.
After i threw out the check valve and upgraded to a 044 bosch pump, my issues were gone.
Edit:
Here is a video, the sound on the end of first gear:
https://youtu.be/0ElqlNd6ios
Th
But it can be noticed that your engine actually acelerated well, wich in most it isn't possible.
FD,
Powered by tractor fuel
(03-14-2019, 10:35 AM)Ecto I think i had a similar problem like you.That hammering id due to air trapped in pump elements...in high output pumps . Most do that .
After reading your thread about your fuel delivery system i am pretty sure i know whats causing the problem.
First: the original lift pump is garbage. The pressure output oscilates and has quite high peak pressures which causes oscilating engine sound on idle.
Second: I had only bad experiences with a check valve on the suction side. It can cause steaming an bubbling inside the lines when the flow is high. And thats exactly what I am thinking is happining to you. When your lift pump pumps more and more fuel, the fuel starts to "boil" inside the suction lines which causes gas inside the lines. This gas causes retarded timing and less fuel being injected.
This problems were happining in low gears, i think due to the higher acceleration the ball inside the valve wanted to close the valve.
After i threw out the check valve and upgraded to a 044 bosch pump, my issues were gone.
Edit:
Here is a video, the sound on the end of first gear:
https://youtu.be/0ElqlNd6ios
Th
But it can be noticed that your engine actually acelerated well, wich in most it isn't possible.
FD,
Powered by tractor fuel
Messages In This Thread
OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 01:23 PM
RE: OM606.962 Valve Float @ raised boost? - by barrote - 12-19-2018, 01:50 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 02:13 PM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-19-2018, 03:00 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 03:12 PM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-19-2018, 03:22 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 03:40 PM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-19-2018, 04:03 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 04:18 PM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-19-2018, 04:36 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-19-2018, 09:18 PM
RE: OM606.962 Valve Float @ raised boost? - by firen456 - 12-20-2018, 01:08 AM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-20-2018, 08:13 AM
RE: OM606.962 Valve Float @ raised boost? - by firen456 - 12-20-2018, 08:28 AM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-20-2018, 08:40 AM
RE: OM606.962 Valve Float @ raised boost? - by firen456 - 12-20-2018, 10:40 AM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-20-2018, 11:03 AM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-20-2018, 03:20 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-20-2018, 05:49 PM
RE: OM606.962 Valve Float @ raised boost? - by erx - 12-22-2018, 12:47 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 12-23-2018, 09:54 PM
RE: OM606.962 Valve Float @ raised boost? - by Ecto - 03-14-2019, 10:35 AM
RE: OM606.962 Valve Float @ raised boost? - by barrote - 03-15-2019, 02:43 AM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 03-14-2019, 01:17 PM
RE: OM606.962 Valve Float @ raised boost? - by barrote - 03-15-2019, 02:51 AM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 03-15-2019, 12:14 PM
RE: OM606.962 Valve Float @ raised boost? - by barrote - 03-15-2019, 03:45 PM
RE: OM606.962 Valve Float @ raised boost? - by jav1 - 03-15-2019, 07:02 PM
RE: OM606.962 Valve Float @ raised boost? - by X Double Dot - 01-13-2022, 03:30 PM
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