We remove the excess pressure pipe in the intake manifold.
We look into the spigot protruding from the collector. There should be a small red head at the bottom, the size of a matchhead. If it is not there, it means that the valve in the manifold is damaged and needs to be replaced.
If we have doubts about its correct operation, we can check its operation in the following way:
1. Remove the valve cover from the engine
2. Use your thumb to plug the hole in the valve head marked with a green arrow.
3. Blow with your mouth into the intake manifold stub (red arrow). If we can blow in air with slight resistance, but cannot pull it out, the valve is working properly. If the valve does not resist when trying to extract air, it is damaged.
In addition to the non-return valve in 1.4 Turbo manifolds, it sometimes happens that the pneumothorax channel at the manifold-head connection, which holds the gasket under the manifold, is damaged, causing the left air to be sucked in.
When ordering collectors, please provide the collector number. The GM number is located on the top of the manifold in the location indicated by the arrow.
Please provide the diameter of the servo stub. The standard value is 8 mm.
Since 2014, collectors with the ending number 171 have had connectors with a diameter of 16 mm.
Uneven engine operation at idle speed,
Oil leakage onto the ignition coil at the height of cylinder 4,
P0171 error code formation (lean mixture)
Long-term and short-term fuel correction exceeds +20%
Only original covers are subject to regeneration.
The cost of regenerating the cover is PLN 280(65 EUR).
On average, several times a month we receive the 1.4 Turbo intake manifold with a bypass valve installed for regeneration. In this way, car owners try to avoid the costs associated with regeneration of the collector. It is true that instead of a non-return valve, a valve in the bypass is inserted, and the membrane in the valve cover is safe, but in practice, new "side effects" often appear, e.g. error P0171, i.e. a lean mixture, or error P1101, i.e. incorrect air flow in the intake system. The check valve in the manifold has a precisely defined air flow and any change up or down causes errors. In 2012, when we started regenerating collectors, we started with bypasses. After a few months, it turned out that only regeneration of the original valve restored the manifold to its factory condition.
Several times a month, we receive the collector for regeneration, in which a tube has been installed to replace the operation of the non-return valve. We started our adventure with collectors in 2012 with an attempt to replace the valve with a pipe. We made about 20 different tubes, spent several weeks of work and were never able to achieve 100% effect. For proper operation of the collector in the full range of speeds and loads, a non-return valve with appropriate capacity is needed. However, if you decide to experiment with the tube, please be careful. If glue or silicone gets into the holes in the valve, getting it out is often impossible or unprofitable.
Properly diagnosing faults in this engine can be quite difficult. This is due to the complexity of the pneumothorax system. The crankcase ventilation system in this engine is designed in such a way that even a slight deviation in air flow causes incorrect operation of the system. Therefore, in case of problems, it is best to choose workshops that deal with Opel cars on a daily basis. However, if you have a problem with errors P0171, P1101, P0299 and determining what is damaged, come to us, we will diagnose and remove the problem within 1 day (in the case of regeneration of the cover and collector, we start at about 8 a.m. and finish at about 2 p.m.).
Each customer receives a receipt or invoice without VAT and a 2-year written warranty on parts and services.
If the valve cover itself is damaged:
Diagnostyka: 280 PLN(65 EUR)
Disassembly and assembly of the cover: 130 PLN(30 EUR)
Cover regeneration: 280 PLN(65 EUR)
Cover gasket: 147 PLN(35 EUR)
Total: 195 PLN
In case of damage to the cover and collector:
Diagnostics, after repair test drive: 280 PLN(65 EUR)
Cover regeneration: 280 PLN(65 EUR)
Cover gasket: 147 PLN(35 EUR)
Cover replacement: 130 PLN(30 EUR)
Regeneration of the poppet in the collector: 580 PLN(135 EUR)
Gasket for the intake manifold: 63 PLN(15 EUR)
Dismantling and installing the collector: 300 PLN( 70 EUR)
Filling the rebate (not always): 120 PLN(30 EUR)
Throttle Cleaning: 0 zł
TOTAL: 445 EUR
© F.H.U "Motronic"