I have been having a strange engine moan now for a few weeks. It happens on light acceleration before the truck shifts at all speeds. It can be faint or extremely loud and I can keep it doing it if I keep the throttle in the same spot when it starts. Also now lately when it does it I can smell exhaust in the cab. No codes are being thrown...naturally
View 1 RepliesI have had an engine growl / howl problem that seemed to disappear with the cooler weather. However, turning the A/C back on yesterday, the growl/howl re-appeared. Is the A/C compressor bad? A/C clutch bad? Heading out on a long distance trip at the end of the month.
When the moan/ groan comes from the engine bay intake area, I have to back off of the throttle in order to re-accelerate... Gas pedal seems to become dead...
Just put a dual flowmaster exhaust on my truck, a week later my engine light came on. I also smell a sulfer smell and the truck seems to sutter when in gear at a stop, and also hard to start at times. What this could be!
View 9 Replies5.4L... My truck has a momentary moan / growl / bog down issue. It happens at town and highway speeds and usually when I have cruise on OR when I lightly apply the gas peddle. It moans for a few seconds and seems to bog down then comes out of it and carry's on its way. You can hear it plainly while driving even with radio on. I have a regular muffler on the truck but when this happens, it makes it sound like I have a catback on it.
Things i have done...
- New air filter
- New oil/filter
- New fuel filter
- Ran techron injector cleaner through tank of gas
So the wife's 08 Mountaineer 4.6 likes coolant. None in the crank case. I suspect head gasket, since I can smell it a bit in the exhaust, but I have also noticed steam coming from the drivers side firewall area, but can't see anything. If it is head gaskets, am I pulling the engine? If I have to pull the engine.
View 5 RepliesI have a 2008 6.4L F-250 and occasionally when I come to a stop I can see a faint white smoke coming out from under the truck and the hood. The smoke has a heavy diesel exhaust smell. When I step on the pedal nothing comes from the exhaust and it does not happen all the time. What is going on?
View 2 RepliesI have a 2004 f150 LAriat supercab 5.4L triton with 120,000 mile on it. Without good reason, I let the dealer convince me to put new plugs in it. Ever since, I've had a serious smell in the cabin of gasoline and or exhaust, and a 2MPG drop in MPG. At first it smelled like gasoline. I took it back to the dealer and they said a connector had backed off, which is code for I don't even want to know what. They "fixed it" but the smell remained.
They then changed the rings on the fuel injectors. The smell got better, but there is more of an exhaust smell now. I checked many blogs about it and found several bloggers with almost the same exact situation. I suggested to the dealer that they need to check that the proper spark plugs were used and they were correctly seated. They of course confirmed this but God only knows if they actually checked.
I also looked up to see if there is a cabin filter on this vehicle and there seams to be some disagreement on the blogs about this fact as well. Now that the cold weather has arrived, I prefer not to take the cowl off or check the plugs myself until it gets a little warmer. The smell is noticeable most of the time and especially stopped at a light regardless of the heater or air conditioner. Should I be more worried about the smell or the fact that I actually took it to this dealer in the first place?
I own a 2004 Ford Taurus (3.0L V6, OHV (12), non-flex fuel) registering a P0420 engine code. If I can smell exhaust fumes in the cabin, can I assume there is a leak in the catalytic converter system, or could the O2 sensors be the issue (or could it be the catalytic converter itself...)?
View 3 RepliesMy car has an exhaust smell coming into the car; seems to be from in front of the passenger side of the engine. Mechanic said it was from leaking valve cover gaskets, which have been replaced about a month ago. The smell is coming back and getting stronger. When I am in stop/go traffic, I have to open the windows. What else could this be caused by?
View 6 RepliesI have a 87 F250 with a 302. Every time I drive it I smell like exhaust. Doesn't matter how short or long the trip, but the longer the trip the stronger the smell when you get out. I found 1 loose manifold bolt and tightend it, but no difference.
View 13 RepliesThe truck in question is a 93 F-150 X/cab 4x4, has 5.0 5spd. So yesterday i replaced my exhaust with pre made magnaflow "y" pipe/cat with a flow master 44 then new pipe all the way out. When i start the truck up this morning to let it warm up a little it started to give off a funny smell almost like brakes/electric burning smell. I was wondering if this is common for new pipes to burn off any oils that may have collected on them from the factory. I look under the truck and nothing is touching the exhaust, but the shiny new pipe is starting to change colors. So do you think it will go away in a short time? I have to an appointment about 30 miles away on the freeway think this will burn off?. BTW there was no smell prior to the exhaust change.
View 1 RepliesMazda Millenia 1996-- Smell of gasoline & exhaust coming in when driving. When we open the hood - smell of gasoline. NO apparent gasoline leaks! Mechanic found fuel injector stuck open - replaced it. Worked a little better for a little while. It seemed to only smell for 5 minutes after starting the car instead of constantly. Mechanic changed the spark plugs. Worked a little better for a couple of hours. Now it's continuous smell of gasoline and exhaust.
View 7 RepliesA few weeks back I changed my plugs and since then I've had the smell of gas getting in the vent system in my truck. So far, I've replaced the injector orings, not that there was any sign of any leakage, but it's simple insurance. I've now replaced the EVAP purge valve again to no avail.
It smells worse when I fire it up or when I come to a stop. The smell gets stronger as the tank empties.
I can find no sign of leaks, broken or disconnected lines or anything. If I run the engine and try to smell for gas in the engine compartment, there is none. Nor is there any after I shut it off. I did look at the connector to the EVAP solenoid, as I heard they tend to corrode. But it looked perfect.
I have been noticing this Rotten egg/sulfur exhaust smell I have been getting for the past 2 months. So far it only happens when the engine hits 3000rpm or higher.
View 9 RepliesAll I did was cut off the straight section of tailpipe and install a 2.5" inlet, 4" outlet exhaust tip. It sounds a bit deeper at idle and a little louder when I rev it, but when I let off the gas it pops pretty loud.
I remember hearing popping on decel on videos of trucks where aftermarket exhaust/mufflers were installed, but not just from a new tip.
I have a 2004 Ford F150 4X4 5.4L...and lately, have been smelling gasoline inside the cabin. The usual troubleshooting hasn't given me any leads...
View 6 RepliesI have an '04 f150 4x4 5.4L lariat new body style, I purchased it a few months ago. (I had an '03 f150 4x4 5.4L lariat that I am comparing the new one to) It seems like this 04 doesnt want to get up and go,(like the '03 did) best way to describe it is like having a potato stuck in the tail pipe. then after driving it for a few weeks I got CEL I think it was P0140, the day I was going to change bank 1&2 sensors 2, the code went away. So I didn't change them.
I instead opted to change the plugs (all plugs came out fine) now I notice a fuel smell when I let off the accelerator,(not sure if I smelled it before) its like a boat exhaust smell- not a raw fuel smell. I am wondering if all these things add up to a clogged or partially clogged cat or just a bad o2 sensor, I dont to spent $100+ for the rear two o2 sensors and still have the same problems, nor do I want to replace the cats and find out it was the o2 sensors all along. when I smell it in the cab, I do not smell it anywhere else, like: under the hood, or any where else under the truck, nor do I see a leak under the truck.
Was looking for a cat back exhaust for my 04 FX4 and was curious if they involve any welding or just strictly bolt on?
View 6 RepliesI am almost 16 and I have a 2006 F150 FX4 with a 5.4 6 1/2 bed and i need a good sounding exahust. I dont wanna break the bank and i need to pass PA state inspection.
View 12 RepliesI have an exhaust leak on the passengers side of my 2006 F-150 5.4 triton. If I do the repair which is the correct way to do it? Do I replace just the blown out gasket?
Do I need to buy a new exhaust manifold and gasket kit, with exactly what parts should I buy in the kit? Or do i need to replace both sides?
I've noticed a strange problem that makes it next to impossible for me to use his truck unless the vents are off or I have both windows all the way down with it on. It smells like it has a fuel leak of some sort and in the cab of the truck it smells bad while driving and gets worse when sitting still, to me it smells like gas and when I open the hood on his truck after idling about 5 minutes or so I can smell it in there so i know its somewhere under the hood but for the life of me I can't see anywhere where its leaking or anything like that but I can smell it all darn day. His truck is an 05 F-150 with a 5.4 and I'd like to figure this out before it becomes a real big problem. I've worked with fuel injected cars and trucks before but I have little knowledge of the mod engines at all. And he is still driving it like that and I just wanna make sure it either is not gas or is just something simple I'm overlooking.
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