common BMW 745 coolant leak
April 15, 2010
BMW 745 series has developed a common coolant leak coming from a water pipe seal located under the intake manifold. Cooland will start leaking from a hole in front of timing cover located next to water pump (passenger side).
Replacing this tube seal requires intensive labor time and parts which makes it an expensive repair between 7,000 to 9000 dollars and could take between 1 to 2 weeks to do it.
There is an aftermarket replacing part. which is a collapsible cooling pipe made of a good material and makes this repair much less expensive and can be done in one day.
I have post some pictures for you of our last coolant pipe repair.
PORSCHE CAYENNE COOLANT LEAK PROBLEM
April 15, 2010
PORSCHE CAYENNE ENGINES ARE ENCOUNTER A COOLANT LEAK PROBLEM. THIS APPLIES TO ALL CAYENNE S, CAYENNE TURBO AND CAYENNE TURBO S BUILD FROM 2003 TO 2006.
THIS COOLAND PROBLEM IS LOCATED UNDER THE INTAKE MANIFOLD OF THE ENGINE WERE THE FACTORY COOLING PIPES MADE OUT OF PLASTIC STARS TO LEAK.
PORSCHE HAS COME OUT WITH A NEW SET OF PIPES MADE FROM ALUMINUN. INTENSE LABOR IS NEED IT FOR THIS PARTICULAR UPGRADE THAT REQUEIRS FEW OTHER HOSES, BUSHING, BRACKET, GASKET AND MANY CASES REQUIRES TO REPLACED THE STARTER MOTOR.
Common PORSCHE 911 Problems – Engine Repair
April 14, 2010
Some early Porsche 3.4 liter engine (996) made from 1998 to early 2001 has developed some engine problems.
One of the biggest problems are cracked cylinder heads. the head can crack from the bolted faced across to a core plug. This leads to oil forcing its way into the water jacket. So look out for signs of contamination in the coolant.
Cylinder liners can also crack due to cylinder block’s torsional rigidity by driving the engine to extremes. Nine out of ten, it”s one of the center cylinders-two or five-and its always the lower edge that fails. The 996 engines are quite different to those on earlier 911s with individual cylinder liners.
All 996 engines have an intermediate shaft that runs the length of the block and is chain driven from the crankshaft. This, in turn, drives the twin camshafts on each bank of cylinders. At the end of this is a sprocket which turns on a bearing. The sprocket is retained by a small stud that can break, causing the bearing to fail. At first, this manifest itself as a noisy rattle, with turns into a death rattle as the cam chains come off, leading to further internal damage.
…so, lets go back to basic. maintenance of your vehicle is the key here. We are not trying to scare you or saying this cars are junk, it is just another car with some common problems. at the end there is not a perfect car out there.
Here are some pictures of our last cracked cylinder head replacement for your better understanding.
