My husband purchased spark plugs for his 2003 vw passat turbo 1.8 lt. He found that there are boots on the spark plug chambers. How do you remove these to replace the spark plugs and what spark plugs do you recommend?
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It sounds like a vacuum leak, look for lose hose and crack boots. One way to check for air leeks is get a can of carb cleaner, with engine running spray it around the vacuum hose the back of the master cly and intake and turbo boots, the idle will change go higher or lower.
It's not difficult at all. You have to remove the big manifold cover. Once that is off, then the spark plugs should be easy to get to. remember to twist the spark plug boot 1/2 turn then pull on the boot. 11 Ft/Lbs of torque when you install.
there are three retainers that hold the top cover onto the valve cover. Remove that cover. You will then see four coils. Uplug and remove the four coils they will just pull up. The 4 spark plugs will be under the coils.
Idle is automatically set&monitored with a timing sensor on the camshaft, i found my engine(1.8 20v turbo) would idle low then go high and almost stall sometimes and all i did was remove the fat black pipe on the throttle and clean inside the throat with a cotton rag dabbed in wd40.Hold the throttle open manually and clean on and around the throttle plate as the oil burnt&recycled creates a hard carbon that stops the throttle working correctly.When did you last change the sparkplugs, air filter, oil and oil filter and remove damp from the spark plug area using wd40 on surfaces applied with a cotton rag.These contribute all to your problem.As you dont state milage etc it could be a worn engine or slipped cambelt(1-2 teeth can make a slight diffirence).
There are no spark plug wires on the 2000-up Northstar engines. They use coil on plug design. First remove the engine service cover.(The Pretty plastic peice that has the Cadillac symbol on it) Then disconnect the coil connector which sits to the right of the coil and should just snap off by hand. Next If you remove the screws that holds the coil pack (8 screws) to the top of the cam covers, you will see 4 black round rubber boots that sit on top of the plugs. Pull the boots free to expose the plugs. The tops of the spark plugs sit directly underneath