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Manifold & EGR Ultrasonic Cleaning

Today’s turbo diesel technology is evolving faster than ever before, increased power output, lower fuel consumption and lower emission values are expected with every new model that manufacturers release.

To help accomplish this, most models utilize whats called an EGR system.  This is a series of ports and valves designed to divert a small percentage of the expelled exhaust gases from the exhaust system, and redirect it back into the inlet manifold and back through the engine.  This process aids in reducing an engine’s harmful emissions.

The down side, as you can see in these pictures, is the re-circulation is contributing to an excessive build up of sludgy deposits through the intake system, EGR system, EGR valves, and the inlet manifold and ports.  This buildup restricts the airflow into the combustion chamber, leaving your engine struggling to breathe.  This can have serious consequences including increased engine temperature, an increase in fuel consumption and noticeable decrease in engine power.  Left unchecked, premature engine failure is possible.

Southside Cylinder Heads has invested in state of the art ultrasonic cleaning,  perfect for cleaning the clogged inlet manifolds and EGR valves.  Fast cleaning times means your customer is off the road as least as possible, and the results are immediate and satisfying,  Almost every customer we do this service for calls us back to say what a difference it has made.

Call us today for prices and recommended service intervals.  

Brisbane’s Best Cylinder Heads, 33435899

 

Nissan YD25 EGR Cooler Issues

Problem:

EGR Cooler corroded or split and leaking Coolant

Vehicles Effected:

Nissan Navara D22 & D40 with YD25DDTI 2.5 Turbo Diesel Engine

Nissan Pathfinder R51 with YD25DDTI 2.5 Turbo Diesel Engine

EGR Cooler

EGR Cooler setup Nissan YD25

We are seeing more & more problems with the EGR coolers in the YD25 Nissan engine.  The coolers tend to corrode or split resulting in loss of coolant and due to the high temperature of the exhaust/EGR system the coolant loss often goes undetected as the coolant evaporates and doesn’t leave a puddle on the ground.  If the problem goes unchecked the cooling system will run dry and the engine may overheat and require major repairs.

To fix the issue some people elect to bypass the EGR system completely using blanking plates on both the exhaust and inlet manifold & disconnecting the coolant flow to the EGR cooler.  From all reports this has been an effective fix but Southside Cyl Heads doesn’t recommend this because removing the EGR will alter the vehicle’s emissions levels & render the vehicle unroadworthy

EGR Cooler Faults

Faults in the EGR cooler YD25

We recommend simply checking your coolant levels regularly and if you notice a drop in the level, get the cooling system checked and check for stains around the EGR pipe ancooler area.

Catching the problem early and rectifying the issue could save you thousands in cylinder head repairs in the event of the engine overheating.  If you suspect your EGR cooler could be leaking, give us a call and we check over the system and put your mind at ease.