I have a ford explorer 2003 4.0l and it doesn't want to start and it also is getting oil in the pcv valve
Calibración de válvulas para
Calibración de válvulas para motor chana 6390 recién reparado. Gracias
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Calibración de válvulas para motor chana 6390 recién reparado. Gracias
Hola amigo,
te dejo todas las especificaciones técnicas y tolerancias del motor 2.8L Vortec de la Chevrolet Colorado. Espero que te sirva.
Oil Pressure......................................... 15 PSI minimum at 2000 RPM
Compression Pressure............................ 100 to 150 PSI
Maximum variation between cylinders....... 20%
Firing Order......................................... 1-2-3-4-5-6
Valves and Related Components
Valve face angle................................... 45 Degrees
Valve seat angle................................... 46 Degrees
Valve seat width
--Intake.............................................. 0.049 to 0.059 inch
--Exhaust............................................ 0.063 to 0.075 inch
Valve seat run out................................. 0.002 inch maximum
Stem to guide clearance......................... 0.001 to 0.0028 inch
Valve spring height................................ 1.57 inches
Valve Spring free length.......................... 1.91 inches
Crankshaft and Connecting Rods
Crankshaft endplay................................ 0.002 to 0.007 inch
Connecting rod endplay (side clearance).... 0.006 to 0.017 inch
Main bearing journal diameter
--1982 (all).......................................... 2.4937 to 2.4946 inches
--1983 and 1984
----Journals 1, 2 and 4 .......................... 2.4937 to 2.4946 inches
----Journal 3........................................ 2.4932 to 2.4941 inches
--1985 and later.................................... 2.647 to 2.648 inches
Main bearing oil clearance
--1982 (all).......................................... 0.0017 to 0.0030 inch
--1983 and 1984
----Journals 1,2, and 4........................... 0.0016 to 0.0032 inch
----Journal 3........................................ 0.0021 to 0.0033 inch
--1985 and later................................... 0.0012 to 0.0030 inch
Connecting rod bearing journal diameter .... 1.9983 to 1.9994 inches
Connecting rod bearing oil clearance......... 0.0012 to 0.0037 inch
Crankshaft Journal taper/out-of-round limit. 0.0002 inch
Engine Block
Cylinder bore diameter............................ 3.504 to 3.507 inches
Out-of-round limit.................................. 0.0005 inch
Taper limit............................................ 0.0005 inch
Pistons and Rings
Piston-to-bore clearance......................... 0.0012 to 0.0026 inch
Compression Ring side clearance
--1989 and earlier
----Top Ring......................................... 0.0012 to 0.0027 inch
----Second Ring.................................... 0.0016 to 0.0037 inch
--1990 and later.................................... 0.0020 to 0.0035 inch
Oil ring side clearance............................. 0.0080 inch maximum
Piston ring end gap
--Compression rings................................ 0.0010 to 0.0020 inch
--Oil ring.............................................. 0.055 inch maximum
Camshaft
Bearing journal diameter.......................... 1.868 to 1.870 inches
Bearing oil clearance............................... 0.001 to 0.004 inches
Lobe lift
--1984 and earlier
----Intake............................................ 0.231 inch
----Exhaust.......................................... 0.262 inch
--1985 and later
----Intake............................................ 0.231 inch
----Exhaust.......................................... 0.273 inch
Torque Specs Ft-lbs
Rocker arm stude to cylinder head............. 45
Main bearing cap bolts............................. 73
Connecting rod cap bolts......................... 39
Cylinder head bolts
--1989 and eariler................................... 70
--1990 and later
----Step 1............................................. 40
----Step 2............................................. Tighten and turn additional 90*
Camshaft rear cover bolts......................... 84 inch pounds
Camshaft sprocket bolts........................... 18
Clutch cover to flywheel bolts.................... 15
Connecting rod cap nuts........................... 37
Crankshaft Pulley bolts............................. 25
Crankshaft pulley hub bolt......................... 75
Cylinder Head Bolts
--2.8L................................................... 70
--3.1L
----Step 1............................................. 40
----Step 2............................................. Tighten Additional 90*
Distributor Hold down............................... 25
Driveplate-to-torque converter bolts........... 27
EGR valve mounting bolts.......................... 15
Engine mounting bracket bolts.................... 80
Engine strut bracket................................. 35
Exhaust manifold mounting bolts................. 25
Flywheel mounting bolts............................. 50
Front Cover mounting bolts (small)............... 15
Front cover mounting bolts (large)............... 25
Fuel pump mounting bolts........................... 15
Intake manifold to cylinder head bolts
--2.8L..................................................... 23
--3.1L..................................................... 19
Main bearing cap bolts............................... 70
Oil filter bolt............................................. 15
Oil filter connector bolt............................... 29
Oil pan mounting bolts (small)...................... 84 inch pounds
Oil pan mounting bolts (large)...................... 18
Oil pump mounting bolt............................... 30
Oil pump cover bolts.................................. 96 inch pounds
Oil pressure switch.................................... 60 inch pounds
Oil drain plug............................................ 18
Rear lifting bracket bolt.............................. 25
Rocker arm cover bolts............................... 96 inch pounds
Rocker arm stud to cylinder head................. 45
Spark plugs.............................................. 12
Starter motor mounting bolts....................... 32
Strut bracket assembly nut and bolt............. 35
Timing chain tensioner bolts........................ 15
Water outlet housing bolts.......................... 25
Water pump mounting bolts (small) .............. 84 inch pounds
Water pump mounting bolts (medium)............ 15
Water pump mounting bolts (large)............... 25
Water pump pulley bolt............................... 15
Hola amigo, te paso el procedimiento que tengo. Esta en inglés pero es bastante fácil de entender.