525tds egr valve cleaning


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1998 – 2000 Nissan FRONTIER & XTERRA MIL WITH DTC P0400, P0402, ROUGH IDLE, DRIVABILITY INCIDENTS, DIFFICULTY SETTING EGR SRT

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Filed Under (Nissan) by admin on 31-12-2010

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IF YOU CONFIRM: • DTC P0400 (EGR) or P0402 (EGRC-BPT Valve) is stored in the ECM, and/or • The vehicle exhibits rough running or other drivability incidents, and/or • Difficulty in setting the EGR System Readiness Test (SRT) status to CMPLT. ACTION: Clean the intake manifold EGR ports.SERVICE PROCEDURE 1. Remove the throttle chamber assembly and place it aside. • Refer to the EM section of the appropriate Service Manual (ESM). NOTE: It is not necessary to completely remove the throttle chamber assembly. • Only remove harness connectors, cables, and hoses necessary to allow the throttle chamber assembly to be placed aside. • Throttle chamber coolant hoses do not need to be removed. NOTE: Figure 1 gives a general location of the plugs for the EGR ports, but the plugs are not visible in the photo. 2/4 2. Remove the EGR valve mounting bolts and then move the EGR valve outward about ½ inch (see Figure 2). • This is so you can remove the plug for the “rear most” EGR port. NOTE: You don’t need to completely remove the EGR valve. Rear Most EGR Port. EGR Valve EGR Mounting Bolts Move about ½ inch. Figure 2 3. Remove the plugs for the EGR ports (see Figure 3). Figure 3

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2001 Chevrolet Cavalier Idle Air Control Motor (IAC): Service and Repair REMOVAL PROCEDURE

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Filed Under (Chevrolet) by admin on 16-09-2010

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1. Remove the idle air control (IAC) valve connector. 2. Remove the IAC valve attaching screws (1). NOTE: If the IAC valve has been in service: DO NOT push or pull on the IAC valve pintle. The force required to move the pintle may damage the threads on the worm drive. Also, DO NOT soak the IAC valve in any liquid cleaner or solvent, as damage may result. 3. Remove the IAC valve assembly (2). ^ Clean the IAC valve O-ring sealing surface, the pintle valve seat, and the air passage. ^ The IAC valve may be cleaned. Use a shop towel or parts cleaning brush to remove any heavy deposits. ^ Any shiny spots on the pintle or seat are normal and do not indicate misalignment or a bent pintle shaft. ^ If the air passage have heavy deposits, remove the throttle body for a complete cleaning. ^ Inspect the IAC valve O-ring for cuts, cracks, or distortion. Replace the O-rings if necessary. ^ When installing a new IAC valve, be sure to replace the valve with an identical part. The IAC valve pintle shape and diameter are designed for a specific application. MEASUREMENT PROCEDURE This procedure is only for installing a new IAC valve. IMPORTANT: If installing a new IAC valve, replace the IAC valve with an identical part. The IAC valve pintle shape and diameter are designed for the specific application. Measure the distance between tip of the IAC valve pintle and the mounting flange. If the distance is more than 28 mm (1.1 in), use finger pressure to slowly retract the pintle. The force required to retract the pintle of a new valve will not cause damage to the valve. INSTALLATION PROCEDURE

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1995 Ford Windstar VALVE CLEARANCE ADJUSTMENT

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Filed Under (Ford) by admin on 17-03-2011

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NOTE: Hydraulic valve lifters are used; no valve adjustment is required. When valve and/or valve seat is machined, valve clearance is reduced and may cause improper valve operation. Different length push rods are available for correcting clearance. Valve lifter must be collapsed to check valve clearance. 1. With valve cover removed, position piston No. 1 at TDC of compression stroke. Completely collapse cylinder No. 1 intake valve lifter and hold valve lifter collapsed. Using feeler gauge, measure clearance between rocker arm and valve stem. 2. Clearance should be within specification. Refer to COLLAPSED VALVE LIFTER CLEARANCE table. Replace push rod, if necessary, to obtain correct clearance. 3. Position crankshaft as specified. See, in this article, VALVE CLEARANCE CHECKING SEQUENCE table, and check appropriate valves. Replace push rods if clearance is not within specification. 4. If push rod(s) is replaced, ensure corresponding cylinder piston is below TDC. It will be necessary to loosen or remove rocker arm to replace push rod. CAUTION: DO NOT operate or crank engine after installing push rod until valve lifter has leaked down to normal operating position. COLLAPSED VALVE LIFTER CLEARANCE

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1992 Suzuki Swift VALVE CLEARANCE ADJUSTMENT

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Filed Under (Suzuki) by admin on 26-05-2011

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NOTE: Samurai & Sidekick 1) Remove rocker cover. Rotate crankshaft until zero degree (TDC) timing mark of timing belt cover is in line with timing mark on crankshaft pulley. 2) Cylinder No. 1 should be at TDC on compression stroke. Remove distributor cap, and ensure rotor is pointed upward at distributor hold-down bolt and to No. 1 terminal of distributor cap. If not as described, rotate crankshaft 360 degrees. 3) Measure valve clearance between adjustment screw and valve stem using thickness gauge. Check intake valve clearance of cylinders No. 1 and 2 and exhaust valve clearance of cylinders No. 1 and 3. 4) Turn crankshaft one complete revolution (360 degrees). Check intake valve clearance of cylinders No. 3 and 4 and exhaust valve clearance of cylinders No. 2 and 4. Ensure clearance is within specification. See VALVE CLEARANCE SPECIFICATIONS table. 5) If clearance adjustment is necessary, loosen lock nut and turn adjusting screw. After adjusting clearance, tighten adjusting Swift DOHC uses hydraulic lifters. Adjustment is not required. screw lock nut to 11-14 ft. lbs. (15-19 N.m) on Samurai or 90-108 INCH lbs. (10-13 N.m) on Sidekick. On all models, recheck clearance. VALVE CLEARANCE SPECIFICATIONS TABLE ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Application SOHC Engines Samurai, Sidekick 8-Valve TBI & Swift (1) Engine Cold Exhaust ……………………. .006-.008 (.15-.20) Intake …………………….. .005-.007 (.13-.17) Engine Hot Exhaust ……………………. .010-.012 (.25-.30) Intake …………………….. .009-.011 (.23-.27) Sidekick 16-Valve PFI Engine Cold Exhaust & Intake ………….. .0031-.0047 (.08-.12) Engine Hot Exhaust & Intake ………….. .0047-.0063 (.12-.16) DOHC Engine Swift (1) …………………………………. (2) (1) – Swift is available with 1.3L DOHC and SOHC engines. (2) – Hydraulic valve lash adjusters are used. Adjustment is not required. ¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡¡ Swift SOHC 1) Remove rocker cover. Remove right side inner fender apron extension to enable timing marks to be seen. Align crankshaft pulley timing mark with TDC mark on timing belt cover. 2) Remove distributor cap. Ensure rotor is pointing upward toward distributor hold-down bolt and to No. 1 terminal of distributor cap. If not as described, rotate crankshaft 360 degrees. 3) Measure valve clearance between adjustment screw and valve stem using thickness gauge. Check intake valve clearance of cylinders No. 1 and 2 and exhaust valve clearance of cylinders No. 1 and 3. Turn crankshaft one complete revolution (360 degrees). Check intake valve clearance of cylinders No. 3 and 4 and exhaust valve clearance of cylinders No. 2 and 4. 4) Ensure clearance is within specification. See VALVE CLEARANCE SPECIFICATIONS table. If clearance adjustment is necessary, loosen lock nut and turn adjusting screw. Hold adjusting screw while tightening lock nut to 11-14 ft. lbs. (15-19 N.m). Recheck clearance. In. (mm)

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2004-2005 Nissan Maxima MIL “ON” WITH DTC P1402 (EGR OPEN) CODE STORED

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Filed Under (Nissan) by admin on 31-12-2010

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IF YOU CONFIRM The MIL is ON and code P1402 EGR OPEN is stored in the ECM. ACTION • Inspect the EGR valve for metallic debris. See the Service Information section of this bulletin for the specific inspection procedure. • If metallic debris is present, replace the Bank 1 catalyst and EGR valve. SERVICE INFORMATION 1. Remove the EGR valve as per the EM section of the respective ESM. 2. Inspect the EGR valve for metallic flake debris. (see Figures 1 and 2) 3. If metallic debris is present in the EGR valve, remove Bank 1 catalyst (rear of engine) as per EM section of the respective ESM. 4. Inspect both the top and bottom of the catalyst. • Bank 1 Catalyst–viewed from the top. (see Figure 3) 5. If the catalyst has loose material as seen if Figure 3 above, blow out the debris from interior of Bank 1 exhaust manifold. Remove the EGR valve and tube, and then blow out any debris from the EGR valve and tube. 6. Replace the Bank 1 catalyst and EGR valve in the reverse order of removal. 7. Clear stored code P1402 from the ECM memory.