Timing Issue
Thread Starter
2018 F150 4X4 5.0
Joined: Jan 2022
Posts: 4
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From: GA
Timing Issue
Specs: 2018 F150 XLT, 5.0, 106K miles
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
Member
Joined: Feb 2021
Posts: 64
Likes: 62
I would get a second opinion. I don’t have experience working with cam phasers, but intuition tells me they couldn’t move timing so much that compression would be lost, or pistons could hit valves. Maybe I’m wrong? Still I would get another opinion on such a large repair bill.
I have experienced a friend’s vehicle get air in a phaser from being low on oil causing timing issues, but that was rectified by filling the oil back up.
I have experienced a friend’s vehicle get air in a phaser from being low on oil causing timing issues, but that was rectified by filling the oil back up.
Senior Member
Joined: Aug 2009
Posts: 5,403
Likes: 2,604
Second opinion time. But first, you say you changed the oil... did you change it, or did you have a shop do it? If so, and it's really 4qts low without having obviously disappeared somewhere, you need to document everything and talk to whomever did the oil change.
5 Year Member
Joined: Oct 2019
Posts: 2,122
Likes: 630
Specs: 2018 F150 XLT, 5.0, 106K miles
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
Thread Starter
2018 F150 4X4 5.0
Joined: Jan 2022
Posts: 4
Likes: 0
From: GA
I would get a second opinion. I don’t have experience working with cam phasers, but intuition tells me they couldn’t move timing so much that compression would be lost, or pistons could hit valves. Maybe I’m wrong? Still I would get another opinion on such a large repair bill.
I have experienced a friend’s vehicle get air in a phaser from being low on oil causing timing issues, but that was rectified by filling the oil back up.
I have experienced a friend’s vehicle get air in a phaser from being low on oil causing timing issues, but that was rectified by filling the oil back up.
Thats what I thought. I wouldn’t think the piston would slap the valve.
Thread Starter
2018 F150 4X4 5.0
Joined: Jan 2022
Posts: 4
Likes: 0
From: GA
I did the oil change myself and am certain 8 quarts went in. Since there’s no evidence of a leak or burning oil, that’s why I’m baffled as to where 4 quarts supposedly went in such a short amount of distance.
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Senior Member
Joined: Aug 2009
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Oil doesn't just vanish. If you lost 4 qts in 1500 miles, you'd know it... it'd either be leaving puddles, making noticeable blue smoke, or making chocolate milk in your degas bottle. Even though you have to wait 15 minutes to check, I don't believe the oil will ever read that low, even if you check it hot.
Junior Member
Joined: Feb 2023
Posts: 1
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Specs: 2018 F150 XLT, 5.0, 106K miles
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
I’ve got a misfire with codes P0300, P0306, P0308, P0019, which indicate random misfire, cylinder 6 and 8, and bank 2 sensor B cam shaft position sensor, after hitting the gas hard to avoid being hit by another driver. I gently drove about 1 mile back home and parked the truck.
I changed plugs and replaced the sensor, but it did not solve the problem. Took it to my local shop, and the mechanic says it’s outta time (obviously) and suggested a phaser in bank 2 is probably stuck, though he has not pulled the valve cover. He suggested replacing timing chain and associated parts ($1,500-$2k) or replacing the engine. He said it could have a bent valve, but couldn’t test compression with it out of time.
He also said the truck was 4 quarts low on oil. I changed the oil about 1500 miles before this happened (8 qts). I have not seen any evidence of leaks, smoke, not smelled burning oil, nothing coming out the exhaust, etc. The mechanic speculated that is what caused the phaser to potentially freeze and it to jump time.
Would being out of time typically also cause a bent valve? That seems excessive. I’m trying to make a decision to do the timing job and hope there’s not a bent valve or invest that money into a new engine.
Funny you say (obviously) like you knew but had no idea! 🤣
