My 2007 Cadillac SRX AWD V6 was pinging on acceleration, had lost engine pep and the gas mileage had dropped to about 10 miles per gallon. The car has 97,000 miles on it and Cadillac recommends changing spark plugs at 100,000 miles. I called Cadillac and got a quote of $ 550. Wow! I called your mechanic and got a quote for $ 299.00. I asked for Patrick, who I had used before. Patrick came and and did a pretty involved job disassembling the top of the engine to reach the spark plugs and replaced them in about 3 hours. Patrick noted that the old plugs were very worn and that the spark plug tubes and the spark tubes had oil at the bottom of them. He told me that might be because the seal at the bottom of the spark plug tubes had failed, allowing oil from inside the valve cover to get into the spark plug tubes. I did some research and found that these seals failing is a relatively common issue in SRX's as well as other vehicles. The seals are not expensive but it appears that to replace them, the top of the engine would need to be disassembled again plus the valve cover on each side would also have to be removed, Then the seals could be installed and everything reassembled. That's most likely an expensive job.
I drove the car after the new plugs were installed. Quite a difference. The car has its pep back, the mileage is starting to rise back to normal levels, and although I still get a slight ping at times, at this point it is about 90 % less than I was getting. My question is if I do nothing about the spark plug tube seals, will my issues return? Notes about this indicate that at some point the spark plugs are fouled enough to cause engine error faults and misfires if the spark plug tube seals are not replaced. Now I have to decide if I want to spend the money to have the new seals installed or take my chances and see what happens. If you read this Patrick, I would appreciate your best guess.
Patrick is a very good mechanic. My dad ran an auto parts store, a garage and a machine shop for 25 years so I do know a few things about cars and know a good mechanic when I see one. If you need an excellent mechanic who is also honest, look no further than Patrick.
2007 CADILLAC SRX - SPARK PLUG REPLACEMENT
Want Patrick's expert advice? Ask your question now. Its free!
Tyler is the consummate professional. He calmed my frustrations and went above and beyond to complete my service in a timely and thorough manner. I would ABSOLUTELY continue to schedule with Tyler AND refer.
2003 CADILLAC CTS - HEATER CONTROL VALVE REPLACEMENT
Want Tyler's expert advice? Ask your question now. Its free!
Before replacing the pump, first be sure that filters, fuel pickups, fuel pump relays, and electrical connectors are in good working order. A clogged fuel filter, for instance, can restrict flow and cause some of the same symptoms.
Your engine needs gas to run. The gas, however, is stored in the gas tank, not in the engine. When the engine needs more fuel, the fuel pump is responsible for pumping the gas from the tank to the engine, where it is used to power the vehicle. As the fuel pump deteriorates, it will be less and less efficient at pumping gas to the engine, and your vehicle will have a harder time running. When the fuel pump completely dies, it will be unable to pump gas to your engine, and your car won’t run.
Fuel Pump Replacement Estimates for Popular Cadillac Models