Question about 2004 Subaru Forester

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Exhaust backfire Replaced timing belt, previous timing belt was off by 2-3teeth. I made sure all marks were lined up before starting, I even did 3-4 fill rotations before starting, all were still lined up together. Car ideals way better but when revved up, sometimes has a very quiet back fire in exhaust?. Could it just be card build up from previous timing belt being off time ?

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  • Subaru Master
  • 3,679 Answers

Yes could be try a fuel additive to cleanaway carbon deposits i'd get one that does the cat converter as well run for around a tank of gas and see if better

Posted on Mar 31, 2014

6 Suggested Answers

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

VOTIT
  • 2071 Answers

SOURCE: Car won't start and floods

Locate your vehicle's computer connector (ALDL), most are on the lower driver's side. In some vehicles you might need to look around a little, on the passenger's side, and around the center console under a plastic cover. For more information, check your owner's manual. This device gathers information that was stored in your carsECM. This information ortrouble code can inform you the system or sensor that is malfunctioning. Look up the code in our diagnostic trouble code chart. After repairs have been made use the code scanner to clear trouble codes and recheck system. B. Testing Fuel Pressure. Test for proper fuel pressure with a fuel pressure gauge. Connect the gauge to the test port on the fuel rail. Fuel pressure reading's very depending on the system your in our vehicle, but most throttle body injection cars (TBI) are between 13 psi and 17 psi. and most (DPI) direct port injection systems are between 40 psi and 55 psi. To find out your vehicle system fuel pressure consult arepair manual. If little fuel pressure is present the fuel pump needs to be replaced.

C. Test for Weak Ignition Spark
. A weak ignition system can be a sign of a failing ignition component. Remove spark plug wire and insert an extra spark plug into end of wire, attach spark plug to engine ground then crank engine. You should observe blue spark between spark plug gap. If a yellow spark is observed, your ignition coil is weak and needs to be replaced. If your spark is not consistent you may need a ignition module.

D. Inspect the Main ECM Relay
. If the ECM relay fails it will shut down the engine management system. This relay carries high amperage and is prone to failure. To test install new relay then test drive to recheck symptoms.

E. Testing the Ignition Switch
. This test requires a electronic test light. When vehicle dies test the power side (+) of your ignition coil with the key on, the test light should illuminate. If your test light is not lighting suspect your ignition switch or ignition relay. To trouble shoot this condition you will needwiring schematic for your car.

Posted on Jul 22, 2008

  • 97 Answers

SOURCE: 1990 SUBARU LEGACY problems

Check for water in spark plug tubes, ign. wire connector ends & coil pack for corrosion.
All marks go up, the crankshaft sprocket has an arrow that you don't use! if you position the crank sprocket where the key way is down you'll notice that the sprockect has a timing mark at the top of one of the sensor pickup teeth, use that. Here is a rough home made pic. I hope this pic made it, no conformation that it did.

Posted on Sep 30, 2008

  • 275 Answers

SOURCE: Replaced timing belt lined up

make sure you dont have anything backwards as far as the plug wires you may have them in the right order but they could be backwards

Posted on Nov 07, 2008

  • 393 Answers

SOURCE: Subaru Legacy 1995.

rotate cam pulley very carefully until exhaust & intake valves on cyl. # 1 are closed there should be a dot or arrow or line on cam pulley/sprocket.

Posted on Dec 06, 2008

Rebgagnon
  • 382 Answers

SOURCE: Cant seem to get timing right after changing head gaskets. Someone previously replaced the timing belt in it and made their own marks and it is causing difficulty for my mechanic. Anyone know where th

What motor and year? If it is the Ej 25 DOHC all the marks are on the cam sprockets except the crank is marked in the block almost straight up, Just a small notch. Good luck and hope this helps. Have a good day.

Posted on Apr 26, 2009

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I have jusy replaced the head gaskets on the motor but i cant seem to get in back in time ive tried to turn the disturbitor but its like it backfires what is the standard time line for this motor.


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Most likely the timing is way off. The engine will start when it is in time and when it is 180 degrees out of time. The timing marks on the cam and the crank will line up correctly once when it is #1 TDC and once when it is 180 degrees out of time. The problem happens when you have the Crank at #1 TDC as it should be and the cam is set incorrectly in most cases. If both valves on the head for the #1 are not closed with the intake open and the exhaust closed for the next cylinder in the firing order your cam is not set correctly even though the timing mark appears to be correct. If the previous timing belt broke while the engine was running odds are every valve will need to be replaced because they are bent. VW did not use a no contact engine in this year model which would have locked the valves in the closed position if the belt broke. If this in fact the case you can verify this by doing a compression check on the cylinders. If you have 0 compression on any cylinders you have bent valves. You can also attach an air compressor to a compression check hose and apply air pressure to each cylinder, if you don't get pressure in the cylinder the valves are either bent or not closing properly.

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Are you sure the new belt didn't jump time? How was the belt tensioner when you replaced yhe belt? Did your water pump leak onto or into your crank sensor?Are you sure you have proper fuel pressure?When you replaced the timing belt, did you make sure to find top dead center on cylinder 1 ? Just lining up the timing marks may not have worked if this is indeed what you did.If you had the crankshaft rotated 180 degrees, your motor would be trying to fire on the exhaust stroke, instead of the compression stroke. To find T.D.C. disconnect your battery,rotate your crankshaft until the piston that is marked #1 in your firing order is at the top of its stroke, this can be accomplished by carefully inserting a wooden or plastic dowel into the sparkplug hole of cylinder#1. The dowel will rise with the piston and at the point where it starts to fall will be T.D.C. Now your timing marks should line up,and you will then be on the compression stroke. good luck! hope this helps

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Required tools:
13mm open end wrench 10mm shallow and deep socket 8mm socket long flathead screwdriver 17mm deep socket T50 torx socket 1/4", 3/8ths and 1/2" ratchets and extensions E10 inverted torx sockets 6mm Allen wrench 15mm open end wrench 7mm socket 12mm open end wrench 14mm socket 12mm socket 8mm, 9mm and 10mm Allen head sockets 19mm socket pry bar needle nose pliers
If you are doing this because your timing belt broke you will also need to buy a complete cylinder head, head gasket set, and both idler pulleys. ALL DAEWOO MODELS WILL BREAK THE INTAKE AND EXHAUST VALVES WHEN THE TIMING BELT BREAKS.
Start by removing the air cleaner assembly from the throttle body, remove the air filter and housing jack up the vehicle and remove the wheel, remove the plastic shielding in front of the accessory drive belt assembly, remove the accessory drive belt, place a jack with a block of wood on top underneath the engine oil pan remove the front engine mount, remove the crank shaft pulley ( the 4 Allen head bolts only not the 17mm bolt in the center.) remove the metal plate behind the engine mount bracket on the engine, remove the plastic timing belt cover 3 clips on top 2 10mm bolts on bottom. Rotate the engine until the #1 cyl. is at Top Dead Center on the compression stroke or line up the crankshaft timing mark with the mark on the inner timing belt cover ( notch in cover with notch in pulley) on the camshaft pulleys -- ( intake cam line up the line on the pulley with the line on the inner cover)( exhaust cam line up the arrow on the pulley with the arrow on the inner cover) loosen the 13mm bolt in the belt tensioner and using the Allen wrench rotate the tab until there is slack in the belt. Remove the belt. At this time I would recommend you replace the water pump, both plastic idler pulleys as they tend to overheat and lockup, and the belt tensioner. Make sure all your marks are lined up, you may need a helper to hold the Exhaust Cam in place as it tends to move during belt installation. Put the timing belt underneath the crankshaft pulley, install the belt leaving the intake cam for last and NO BELT SLACK on the right side between the crank and the exhaust cam. Once the belt is installed rotate the crankshaft over 2 revolutions and make sure is rotates freely, and your timing marks are aligned perfectly if not the engine will not run properly, tension the belt as needed. Installation is the same as removal.

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One more item that you may as well replace while you are in there is the cam position sensor if you have not already, as there have been issues with them, and the timing housing has to be opened to get to it

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CHECK AUTO ZONE .COM FOR TIMING PROCEEDURE. I HAVE DONE THIS & IT IS VERY HARD TO GET TIMING MARKS PERFECTLY LINED UP. TOOK ABOUT 3 TRIES. ( CAMS WANT TO MOVE DURING PROCESS.) WHEN TIMING IS JUST RIGHT , IT WILL RUN. MAKE SURE BOTH CAM SROCKET ARROWS ARE POINTING UP. THERE IS A TIMING MARK IN THE VALLEY OF THE EXHAUST CAM SPROCKET TEETH THAT I MISSED.YOU HAVE TO START WITH EXHAUST CAM TIMING MARK JUST BELOW INTAKE CAM SPROCKET TIMING MARK & THEN WHEN BELT IS COMPLETELY ON , MOVE EXHAUST CAM TO TAKE UP SLACK IN BELT. IT WORKS !!!

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