Fernando Mendes Posted July 11, 2015 Report Posted July 11, 2015 Bubbles is air inside the system.How to discover where it is entering? Can I use soap to test?Thanks for your help. Quote
Don Coatney Posted July 11, 2015 Report Posted July 11, 2015 Need more information. Engine running or not running? Do these bubbled cause any problem such as the engine will not run? Why do you think this is a problem? Quote
Fernando Mendes Posted July 11, 2015 Author Report Posted July 11, 2015 It is running,but without power,when I am in 3rd speed and accelerate.I noticed too a vibration in this speed that I am assuming it is the engine angle with the propeller and axle,after I changed the front engine insulator.The insulator is not original is is more higher than the original. Quote
Don Coatney Posted July 11, 2015 Report Posted July 11, 2015 It is running,but without power,when I am in 3rd speed and accelerate. How is it possible to look at the transparent fuel line when in 3rd and accelerating? Quote
Jeff Balazs Posted July 12, 2015 Report Posted July 12, 2015 Fernando; I don't think the slight difference in the engine mount height would cause the problem you are having. Sounds more like it could be a high speed missfire or maybe fuel starvation. You may have disturbed the flex fuel hose that is located between the front RH crossmember and the fuel pump. A fault in that line could cause the fuel pump to draw some air into the system. Hope this helps, Jeff Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 Jeff,see this pic and you will know what I am referring.When running at 3rd speed at 20mph I feel a vibration like propeller,pinion axle. Quote
Dave72dt Posted July 12, 2015 Report Posted July 12, 2015 I would only consider the front mount being changed as the problem if it ran fine and without vibration before you changed it and the problems showed up immediately after you changed it. If the mount is not a correct mount, you may have changed the driveline angles and created the vibration problem If it is a correct mount, it should not have created a vibration. Is it possible when changing the front mount that you may have pinched or damaged the fuel line? Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 Does exist some tests to do? Quote
Jeff Balazs Posted July 12, 2015 Report Posted July 12, 2015 Fernando; I am not an expert on this but I wouldn't think that replacing an old compressed front motor mount with a new one would cause a problem with the drive shaft. Surely the basic design allows for some slight height difference here. When you jacked up the engine to replace this mount you may have damaged the flex connection between the hard line and the fuel pump. Maybe just enough to allow the fuel pump to draw in a bit of air. I would replace that flex line if it is old or shows signs of wear. This could be why you are seeing air bubbles where you have not seen them in the past. If you are drawing in some air here then that might explain the loss of power when accelerating. Might also create some rough running that feels like vibration. Jeff Quote
bach4660 Posted July 12, 2015 Report Posted July 12, 2015 Bubbles is air inside the system.How to discover where it is entering? Can I use soap to test?Thanks for your help. If air is coming in, when it is running then gas can go out when not running, so you should be able to smell the gas leak. But for testing I would try more air. I would remove the gas cap at the tank wrap a rag around the air hose and add a bit of pressure, and listen for a hiss or bubble along the fuel line? As Jeff said if this occured after a change thats the first area I would be looking at for a crack, leak disturbance. Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 There is not smell nor evidence of leak in the floor or around the pump.My tank to the pump hose is of plastic(not original). 1 Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 first pic:an original engine mount(not mine) second pic:two front rounds mount that my mechanic put in october 2013 third pic:after put. They were the last we found here in my city. Quote
Jeff Balazs Posted July 12, 2015 Report Posted July 12, 2015 Fernando you have the wrong mounts. Way too tall. The correct type looks similar what you had to begin with. Jeff Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 Fernando you have the wrong mounts. Way too tall. The correct type looks similar what you had to begin with. Jeff I have one new from my transmission 1942 Willys jeep,but the distance of the bolts are different. Quote
Jeff Balazs Posted July 12, 2015 Report Posted July 12, 2015 Fernando; You can find this item on Ebay. You should really have the correct item. Jeff Quote
Dave72dt Posted July 12, 2015 Report Posted July 12, 2015 You can check the angles at the tailshaft and pinion with an angle finder to verify they are parallel. If they are not, you can shim the rear axle with wedge shims to correct it if you want to continue to use the front engine mounts you now have in place. Did the vibration start before you replaced the front mount or after? this is an important piece of information. Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 Now I am trying to buy an original model in MERCADO LIVRE(R$165,00=$55).I am waiting the answer of the seller.I beg to him send me the measurements to check with the jeep I have.To me the vibration began after I change this mount. Quote
Fernando Mendes Posted July 12, 2015 Author Report Posted July 12, 2015 You can check the angles at the tailshaft and pinion with an angle finder to verify they are parallel. If they are not, you can shim the rear axle with wedge shims to correct it if you want to continue to use the front engine mounts you now have in place. Did the vibration start before you replaced the front mount or after? this is an important piece of information. Dave72dt,I checked many days ago the parallelism of the engine with a spirit-level(instrument),puting it in the head(above) and noticed that the bubble of the liquid(instrument) was not in the center,showing me that it was not parallel(the engine). Quote
Fernando Mendes Posted July 13, 2015 Author Report Posted July 13, 2015 Fernando; You can find this item on Ebay. You should really have the correct item. Jeff Jeff this item is not send to Brazil. Quote
Dave72dt Posted July 13, 2015 Report Posted July 13, 2015 It doesn't have to be level. It may be several degrees off level but needs to match the degrees of level of the pinion shaft. This is usually checked at the tailshaft of the transmission and the pinion yoke on the differential. Maybe a better way to explain is how many degrees off plumb are they. If the transmission is headed down, then the pinion must be headed up the same degrees. Quote
Fernando Mendes Posted July 13, 2015 Author Report Posted July 13, 2015 Dave72dt,this is the level I used to check if the head of engine was parallel or not in relation to the horizontal line.It is not parallel.It is already contradicting the theory.Now I will study with my mechanic a manner to rotate(if exist) the axle same quantity of degrees to become both(engine and axle) parallel.Regards. Quote
Jeff Balazs Posted July 13, 2015 Report Posted July 13, 2015 Fernando; I had no idea that Ebay sellers would not ship to Brasil. I have bought stuff rom all over the world on ebay and never had an issue. Let me know if you can't put your hands on the correct mount and I will find a way to get it to you. Jeff Quote
Dave72dt Posted July 13, 2015 Report Posted July 13, 2015 Try a search for "angle gauge". both digital and analog are available. check your local hardware or building supply store. Quote
Fernando Mendes Posted July 13, 2015 Author Report Posted July 13, 2015 Fernando; I had no idea that Ebay sellers would not ship to Brasil. I have bought stuff rom all over the world on ebay and never had an issue. Let me know if you can't put your hands on the correct mount and I will find a way to get it to you. Jeff THANKS,but not yet because I am trying with MERCADO LIVRE here in Brazil.Still do not have the answer.Regards. Quote
Fernando Mendes Posted July 13, 2015 Author Report Posted July 13, 2015 Try a search for "angle gauge". both digital and analog are available. check your local hardware or building supply store. Ok I will see in a local hardware.Regards. Quote
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