I am new to this site but I have been reading alot of the posts dealing with some of these trucks not allowing it to boost properly around 10 psi well with mine I try and floor and then the truck automatically backfires and bouces the boost needle up and and down the truck jerks heavily when this is attempted otherwise it starts and runs decent I do have platinum plugs in this truck someone put em in b4 I got and have not had a chance to change em vaccum lines look good to me I need some help diagnosing this problem and the platinum plugs in there are NGK G power it just started doing this too I also only had 1/4 tank of gas in it when this started happening
got an issue with my boost
- Thread starter typhowner
- Start date
Flyin Ryan
hated cuz he drives fords
Re: got an issue with my boost
don't know if it's your problem or not but with our tanks and the amount of torque we have there is a real issue with fuel sloshing away from the pickup causing a lean condition which can cause broken motor parts
Aside from that i'd suggest hooking up a fuel pressure gauge and check to make sure your getting good pressure.. maybe change out the fuel filter too
don't know if it's your problem or not but with our tanks and the amount of torque we have there is a real issue with fuel sloshing away from the pickup causing a lean condition which can cause broken motor parts
Aside from that i'd suggest hooking up a fuel pressure gauge and check to make sure your getting good pressure.. maybe change out the fuel filter too
Re: got an issue with my boost
yeah I recently changed the filter and FP checks out did a cap and rotor change out to perf one changed the plugs out too when the mech did a test on the plug wires he said one was causing a misfire could it be this one that cuts out under load and causes a backfire through the exhaust to the point where it nearly stalls? I have changed everything else but the wires and the coil where would I possibly turn next? I tried to put more fuel in but it still does with more than 1/2 a tank in
yeah I recently changed the filter and FP checks out did a cap and rotor change out to perf one changed the plugs out too when the mech did a test on the plug wires he said one was causing a misfire could it be this one that cuts out under load and causes a backfire through the exhaust to the point where it nearly stalls? I have changed everything else but the wires and the coil where would I possibly turn next? I tried to put more fuel in but it still does with more than 1/2 a tank in
Tooky
Serious about performance
Re: got an issue with my boost
Do you have a mechanical aftermarket boost gauge? If not, you *need* one. The stock gauge is worthless. You could be dangerously overboosting and the chip is cutting off fuel to try and save your motor from self-destruction. Also, get rid of those platinum plugs and change to NGK's. We're only talking like $14 and 15-45 minutes of your time.
Do you have a mechanical aftermarket boost gauge? If not, you *need* one. The stock gauge is worthless. You could be dangerously overboosting and the chip is cutting off fuel to try and save your motor from self-destruction. Also, get rid of those platinum plugs and change to NGK's. We're only talking like $14 and 15-45 minutes of your time.
Re: got an issue with my boost
yep sure do when the backfire happens it's around 10psi going to get some new wires this weekend the old ones are garbage from what the tests confirm I don't think it's overboosting it works in the range it should 15 - 17 Psi when it was working properly I also was not pushing it hard at all when this problem began
yep sure do when the backfire happens it's around 10psi going to get some new wires this weekend the old ones are garbage from what the tests confirm I don't think it's overboosting it works in the range it should 15 - 17 Psi when it was working properly I also was not pushing it hard at all when this problem began
The Devils Own Chariot
Active member
Re: got an issue with my boost
I can say from my experiences with overboost if you even get close to the 15psi range that 2bar will shut you down. The truck cuts out and kinda jumbles and the engine light comes on. Ever since I put in a 3 bar I can boost to any level I want. But I am limited to what I can safely run.
I can say from my experiences with overboost if you even get close to the 15psi range that 2bar will shut you down. The truck cuts out and kinda jumbles and the engine light comes on. Ever since I put in a 3 bar I can boost to any level I want. But I am limited to what I can safely run.
The Devils Own Chariot
Active member
Re: got an issue with my boost
Plugs? My down pipe burned through one of my wires one time and did what you are talking about. It started and idled fine. No power and jerky acceleration. Some back firing. A bad plug, wire, ignition, put the plug wire on the wrong spark plug. I don’t know I’m just grasping now. Where do you live? If you live in MN or WI I could help you.
Plugs? My down pipe burned through one of my wires one time and did what you are talking about. It started and idled fine. No power and jerky acceleration. Some back firing. A bad plug, wire, ignition, put the plug wire on the wrong spark plug. I don’t know I’m just grasping now. Where do you live? If you live in MN or WI I could help you.
Re: got an issue with my boost
well actually I live in canada and yes your hitting the ball on what I am talking about when the mechanic checked the truck out he told us the 3 wires right beside the downpipe were not working so I have a new set of wires comming and boot protectors man I can tell ya one thing though these trucks are VERY picky as to what parts they like. btw thnx for the offer to help me I appreciate all the input I have gotten here so far.
well actually I live in canada and yes your hitting the ball on what I am talking about when the mechanic checked the truck out he told us the 3 wires right beside the downpipe were not working so I have a new set of wires comming and boot protectors man I can tell ya one thing though these trucks are VERY picky as to what parts they like. btw thnx for the offer to help me I appreciate all the input I have gotten here so far.
The Devils Own Chariot
Active member
Re: got an issue with my boost
You got that right about them being picky. I still do not understand why people would use them as daily drivers. Mine has 39,000 original miles and I’m not comfortable driving it long distances. I know it could make it but there is always that question in the back of my mind. "Is something going to break?" It’s not like jumping in my Toyota Camry and being worry free about reliability. Sy/Tys are great toys though. I know there is a lot of people that disagree with me and that’s fine.
I’m glad you got things figured out. It sucks wondering "what’s gone wrong now."
You got that right about them being picky. I still do not understand why people would use them as daily drivers. Mine has 39,000 original miles and I’m not comfortable driving it long distances. I know it could make it but there is always that question in the back of my mind. "Is something going to break?" It’s not like jumping in my Toyota Camry and being worry free about reliability. Sy/Tys are great toys though. I know there is a lot of people that disagree with me and that’s fine.
I’m glad you got things figured out. It sucks wondering "what’s gone wrong now."
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![Quickstop [UK]](/data/avatars/m/5/5165.jpg?1570199786){kind=avatar}
Quickstop [UK]
Combating adversyty.
Re: got an issue with my boost
14.7psi > = ECU cutout
read the codes
get Data Master -
first stop syty servicing before wasting time on anything else.
Good luck!
14.7psi > = ECU cutout
read the codes
get Data Master -
first stop syty servicing before wasting time on anything else.
Good luck!
Re: got an issue with my boost
truck is fixed changed out all the ignition components and she runs great the new wires are MSD and so is the coil Blaster I believe and wow what a difference from the stock setup thnx everyone who gave me their input the old coil had gotten so bad that the truck didn't even start and I had it parked for a couple days waiting for new parts but now it's great.
truck is fixed changed out all the ignition components and she runs great the new wires are MSD and so is the coil Blaster I believe and wow what a difference from the stock setup thnx everyone who gave me their input the old coil had gotten so bad that the truck didn't even start and I had it parked for a couple days waiting for new parts but now it's great.