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Misfire Polo 1.4 16v BBY 2002 model Thank you, the engine was totally overhauled, and I mean everything. I bought new rear main oil seal housing and this come with the trigger wheel and a transportation lock. I also bought an assembly tool to fit the sealing flange. Tool # T10017 from VW.The cam shafts must be in the position to fit the locking pins. Tool # T10016 (VW). The crank must be TDC so that the tooth with the end ground down aligns with the mark on the oil pump. All this done I then fitted the rear sealing flange. All done. Started the engine and it misfires. It sound like the plug is firing before the valves are fully closed for it can be heard back firing through the intake. This is only on idle. When revving the motor it sounds very good. Compression test = at 1600 KPa on all 4 cyl. Fires Thank you for your response

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  • Cars & Trucks Master
  • 4,514 Answers

Ur cam shaft indexing is retarded too much--it clears up w speed as engine reachs maxtorque--or it cud be othr mechanical miscalibrate---or evn an injector issue---------chec anothr repair manual-library has them or send prob to magicmechanic online-a master on any motor

Posted on Nov 24, 2013

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6ya6ya
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SOURCE: I have freestanding Series 8 dishwasher. Lately during the filling cycle water hammer is occurring. How can this be resolved

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Posted on Jan 02, 2017

ken_howard
  • 10 Answers

SOURCE: had a cambelt break on

Its because your pistons on 1&4 are up top that is why your bent valves got bent you are doing exactly the same thing so turn the crank back 15degrees position your cam and reset your crank,it seems to me you may be out of your depth lets hope not or it may be expensive

Posted on Apr 25, 2009

  • 14036 Answers

SOURCE: 2001 Galant ES-V6 DTC is P0304 - Cylinder #4 misfire

look for weak valve springs.

Posted on Jun 22, 2009

alicantecoli
  • 22156 Answers

SOURCE: 91 Prizm; replaced Cam TIming

take the head off bent valves thats for sure

Posted on Dec 07, 2010

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My Ford bantam 2003 model was done an engine overhaul recently its now driving a bit better than before on the power factor. The problem is that it is having some awkward raves & oil drips underneath


that is indicators or a badly installed rear main seal
the oil is coming out past that seal
as the system requires a complete sealed sump to run properly that would also account for poor performance
check that the PCV valve has been installed correctly and not blocked as that will cause pressure in the sump which will also cause oil leaks at the rear main seal

Jul 10, 2016 | Ford Cars & Trucks

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Engine is making oil


An engine does not make oil, but it can spill the oil that should be inside. You could have an oil leak, which means that oil will be leaking from either the front or the rear oil seal. The front oil seal is just behind the crank pulley, the one that drives the fan / alternator belt. If oil is leaking from there, suspect the front seal.
If you have oil leaking from the bell housing, that the the bell shaped metal thingy between the engine and the gearbox. you can suspect the rear oil seal.
If you inspect the engine and see oil leaking from the oil pan under the engine, you have a leaking pan gasket. This can usually be solved by tightening the pan bolts, a whole lot of bolts underneath the engine.
Finally, and this is probably the worst, if you see oil around the breather pipe that goes from the valve cover on top of the engine to the gas intake system, you have leaking compression, that means either the valve stem seals are leaking or the compression rings are finished, and you will have to have the engine overhauled, or at the very least have the cylinder head overhauled.
If the rings are suspect, you will also have excessive smoke out of the exhaust when you drive, especially when you accelerate. Check the exhaust for signs of wet oil.

Mar 18, 2015 | Cars & Trucks

1 Answer

Oil light keeps comeing on ???


Remove the electric sender and install mechanical oil gauge to check that you have proper oil pressure. Bet ya the main bearings are not fitted correctly or the engine wasn't cleaned during overhaul and now bearings are trashed.

Jan 19, 2015 | Cars & Trucks

3 Answers

Why would I have oil in where my flywheel is and


Give more information. What car, what year model? If there is oil where the flywheel is, chances are you have a leaking rear main bearing oil seal or leaking gear box primary shaft oil seal. Coil packs? They should be there to make the car go.

Sep 27, 2014 | Cars & Trucks

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I have a 2003 Dodge Neon se there's a major oil leak between the engine and transmission how do I fix this


Check that the oil leak is not engine oil coming out before the bell housing ( sump gasket) If the oil is coming out of the bell housing inspection cover then it means box put and either flywheel off for a rear main seal or torque converter out for a seal in the box or converter.. If it is a sump or rear main seal check the engine oil level first and the PCV valve operation as excessive oil level and sump pressure will cause the engine side problems that you can fix without removing the box.

Mar 02, 2014 | Cars & Trucks

1 Answer

How do I replace the rear seal on a cadillac cts


YOU NEED TO REMOVE FLYWHEEL REMOVE OIL PAN. REMOVE REAR OIL SEAL HOUSING BOLTS. USING THE PRY POINT LOCATED AT THE EDGE OF THE CRANKSHAFT REAR MAIN SEAL HOUSING SHEAR THE RTV SEALANT. REMOVE THE REAR MAIN OIL SEAL. INSTALL GUIDE PINS INTO THE TWO CRANK SHAFT REAR OIL SEAL HOUSING CORNER BOLT HOLES OF THE ENGINE BLOCK.INSTALL THE CRANKSHAFT REAR SEAL INSTALLING TOOL ONTO THE REAR OF THE CRANKSHAFT FLANGE. APPLY A 0.2 INCH 3MM BEAD OF SILICONE SEALANT TO THE REAR OIL SEAL HOUSING . INSTALL THE REAR HOUSING TO THE ENGINE BLOCK.REMOVE THE GUIDE PINS AND INSTALL THE HOUSING BOLTS TIGHTEN THE BOLTS TO 89 INCH LBS. REMOVE THE REAR SEAL INSTALLATION TOOL FROM THE CRANKSHAFT FLANGE.THEN INSTALL OIL PAN AND FLYWHEEL.

Sep 10, 2011 | 2008 Cadillac Cts

1 Answer

I have a 2006 Pontiac Grand Prix, it is supercharged 3800. I have about 115,000 miles on it and I change the oil every 3,000 miles, check fluids, regular preventative maintenance, etc. I noticed a small...


If it's oil, it's coming from the rear main seal.. I would go with this idea.

The seal doesn't cost much but the labor to get to it does.

To give you an idea what is involved the procedure is illustrated below from the service manual:

Removal & Installation 3.8L Engine To Remove:
  1. Drain the engine coolant.
  2. Drain the engine oil.
  3. Remove the oil pan.
  4. Remove the engine flywheel.
  5. Remove the rear oil seal housing and gasket. Rear seal removal 3.8L gm-03-38-1175.gif

  6. Remove the rear main seal by placing the housing face down on 2 blocks of wood. Using a drift tool and hammer tap the seal out of the housing.
To Install:
NOTE: Do not lubricate the rear main oil seal or the installation tool. Do not touch the sealing lip of the rear main seal once the protective sleeve is removed.
NOTE: Use a clean lint free cloth to clean the crankshaft sealing surface. Remove sharp edges or burrs that could damage the rear main oil seal. Remove burrs or sharp edges with a crocus cloth.
  1. Carefully remove the rear oil seal from the protective sleeve.
  2. Install the oil seal onto the seal driver EN-47623 or equivalent by placing the seal at an angle and twisting until it is fully seated.
  3. Install the seal into the housing using the seal driver EN-47623 or equivalent and driver handle J-8092 or equivalent. Apply downward force until the seal is seated. NOTE: Ensure that the housing gasket is installed correctly and that the oil passages are not blocked.
  4. Using a new gasket Install the rear oil seal housing on the engine being careful not damage the rear main seal. NOTE: The plastic inserts are used in production and are not needed for assembly.
  5. Hand tighten the bolts. Rear seal housing alignment 3.8L gm-03-38-1176.gif

  6. Place a straight edge on the crankshaft rear oil seal housing flange and the engine block oil pan flange. Using a feeler gauge check that there is no more than .0004 in (0.10 mm) step on each side. Rotate the housing to make the steps equal on both sides.
  7. Tighten the housing bolts 11 ft-lb (15 Nm) plus an additional 50 degrees.
  8. Ensure that the housing did not move out of specification. Repeat step 6 if the oil seal housing is not within the specified range. Replace the rear oil seal housing if the specified measurement can not be reached.
  9. Install the flywheel.
  10. Install the oil pan.
  11. Fill the engine oil and the cooling system.
  12. Check for leaks
5.3L Engine To Remove:
  1. Remove the flywheel from the crankshaft.
  2. Remove and discard the crankshaft rear oil seal from the rear cover.
To Install:
  1. Use clean engine oil to lubricate the outside diameter of the crankshaft rear oil seal and rear cover oil seal bore.
  2. Install the tapered cone and bolts of a J 41479 or equivalent crankshaft rear oil seal installer onto the crankshaft.
  3. Place the crankshaft rear oil seal onto the tapered cone.
  4. Install the threaded rod of the J 41479 crankshaft rear oil seal installer into the tapered cone. Rear main seal installer 5.3L gm-03-53-3872.gif

  5. Install the crankshaft rear oil seal by turning the handle of the J 41479 clockwise.
  6. Remove the J 41479 crankshaft rear oil seal installer from the crankshaft.
  7. Install the flywheel onto the crankshaft.
prev.gif next.gif--- I'm not sure what the exact cost would be as the hours were not listed for this procedure on my online resource.

Sep 02, 2010 | 2006 Pontiac Grand Prix

1 Answer

Engine misfire No cly.


Hi

Did you get to the bottom of this? thanks,jamie

Apr 29, 2009 | Volkswagen Golf Cars & Trucks

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