JDM B16B/P28 using Crome: Backfiring, hesitation, bogging
#1
Honda-Tech Member
Thread Starter
Join Date: Sep 2009
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
JDM B16B/P28 using Crome: Backfiring, hesitation, bogging
Ok so where to begin. This is strange as it is an intermittant problem and does not do this all the time. Well, the backfiring does happen all the time.
I will list the specs on the car first
JDM B16B- stock except for CAI
P28 using crome
here is what I have done to the car
New cap rotor and plugs( wires were new when the motor was installed)
rechecked ECU setup. Everything is dead on as far as that goes, AFR is correct, everything. Injectors are good( just replaced them in June). Thermostat is good-replaced last November when car was in shop for motor swap.
O2 sensor was replaced in July
The backfiring occurs when letting off the throttle( it sounds like a le-mans car when downshifting and you see flames- if you can picture that). The hesitation/bogging can occur at random times, mostly after I have been idling and accelerate away from a stop light. I am planning on Seafoaming the intake tomorrow and changing plugs and oil at the same time.
The other thing is, with the B16B I still have the stock D-series exhaust( converter and all. I am getting this taken care of tomorrow at Midas(new high-flow cat with 2.5 inch exhaust) as well as asking the tech who owns a Type-R swapped Integra to look at it for me.( similar motors, so hopefully he MIGHT have some answers).
The only other two things I can think of other than the above is the TPS and MAP sensors.
Also, when idling there is a lope to the idle. I hesitate to call it a rough idle as the tachometer stays steady at idle( around 800 and is not too obnoxious) If I rev the motor at a light( even just blipping the throttle) I have noticed it will NOT hesitate. It still runs ok when at WOT, and VTEC still works great( hits hard at 6500 RPM).
Any educated guesses as to what the heck this might be? I have searched the forums and found similar problems, but nothing that matches anything like what I have described.
Thanks in advance for your help...
I will list the specs on the car first
JDM B16B- stock except for CAI
P28 using crome
here is what I have done to the car
New cap rotor and plugs( wires were new when the motor was installed)
rechecked ECU setup. Everything is dead on as far as that goes, AFR is correct, everything. Injectors are good( just replaced them in June). Thermostat is good-replaced last November when car was in shop for motor swap.
O2 sensor was replaced in July
The backfiring occurs when letting off the throttle( it sounds like a le-mans car when downshifting and you see flames- if you can picture that). The hesitation/bogging can occur at random times, mostly after I have been idling and accelerate away from a stop light. I am planning on Seafoaming the intake tomorrow and changing plugs and oil at the same time.
The other thing is, with the B16B I still have the stock D-series exhaust( converter and all. I am getting this taken care of tomorrow at Midas(new high-flow cat with 2.5 inch exhaust) as well as asking the tech who owns a Type-R swapped Integra to look at it for me.( similar motors, so hopefully he MIGHT have some answers).
The only other two things I can think of other than the above is the TPS and MAP sensors.
Also, when idling there is a lope to the idle. I hesitate to call it a rough idle as the tachometer stays steady at idle( around 800 and is not too obnoxious) If I rev the motor at a light( even just blipping the throttle) I have noticed it will NOT hesitate. It still runs ok when at WOT, and VTEC still works great( hits hard at 6500 RPM).
Any educated guesses as to what the heck this might be? I have searched the forums and found similar problems, but nothing that matches anything like what I have described.
Thanks in advance for your help...
#3
Honda-Tech Member
Join Date: Jun 2008
Location: wexford, Ireland, Ireland
Posts: 291
Likes: 0
Received 0 Likes
on
0 Posts
Re: Backfiring, hesitation, bogging.
the backfiring on decel, is the fuelcut working when you leave off the throttle?
also have you enough ignition timing in the no load sites of the map (where it is on decel)
i have 0 degrees in those sites just to get the pops and flames going! :D
also have you enough ignition timing in the no load sites of the map (where it is on decel)
i have 0 degrees in those sites just to get the pops and flames going! :D
#7
Re: Backfiring, hesitation, bogging.
When the engine is decelerating and the throttle is closed, the ECU should prevent the injectors from spraying any gas into the cylinders (=fuel cut off).
Trending Topics
#8
Honda-Tech Member
Thread Starter
Join Date: Sep 2009
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
Re: Backfiring, hesitation, bogging.
First check the base timing with the service connector jumped. Does the pointer align with the red mark (middle in group of three) on crank pulley?
When the engine is decelerating and the throttle is closed, the ECU should prevent the injectors from spraying any gas into the cylinders (=fuel cut off).
When the engine is decelerating and the throttle is closed, the ECU should prevent the injectors from spraying any gas into the cylinders (=fuel cut off).
#9
#10
Re: JDM B16B/P28 using Crome: Backfiring, hesitation, bogging
Ok so where to begin. This is strange as it is an intermittant problem and does not do this all the time. Well, the backfiring does happen all the time.
I will list the specs on the car first
JDM B16B- stock except for CAI
P28 using crome
here is what I have done to the car
New cap rotor and plugs( wires were new when the motor was installed)
rechecked ECU setup. Everything is dead on as far as that goes, AFR is correct, everything. Injectors are good( just replaced them in June). Thermostat is good-replaced last November when car was in shop for motor swap.
O2 sensor was replaced in July
The backfiring occurs when letting off the throttle( it sounds like a le-mans car when downshifting and you see flames- if you can picture that). The hesitation/bogging can occur at random times, mostly after I have been idling and accelerate away from a stop light. I am planning on Seafoaming the intake tomorrow and changing plugs and oil at the same time.
The other thing is, with the B16B I still have the stock D-series exhaust( converter and all. I am getting this taken care of tomorrow at Midas(new high-flow cat with 2.5 inch exhaust) as well as asking the tech who owns a Type-R swapped Integra to look at it for me.( similar motors, so hopefully he MIGHT have some answers).
The only other two things I can think of other than the above is the TPS and MAP sensors.
Also, when idling there is a lope to the idle. I hesitate to call it a rough idle as the tachometer stays steady at idle( around 800 and is not too obnoxious) If I rev the motor at a light( even just blipping the throttle) I have noticed it will NOT hesitate. It still runs ok when at WOT, and VTEC still works great( hits hard at 6500 RPM).
Any educated guesses as to what the heck this might be? I have searched the forums and found similar problems, but nothing that matches anything like what I have described.
Thanks in advance for your help...
I will list the specs on the car first
JDM B16B- stock except for CAI
P28 using crome
here is what I have done to the car
New cap rotor and plugs( wires were new when the motor was installed)
rechecked ECU setup. Everything is dead on as far as that goes, AFR is correct, everything. Injectors are good( just replaced them in June). Thermostat is good-replaced last November when car was in shop for motor swap.
O2 sensor was replaced in July
The backfiring occurs when letting off the throttle( it sounds like a le-mans car when downshifting and you see flames- if you can picture that). The hesitation/bogging can occur at random times, mostly after I have been idling and accelerate away from a stop light. I am planning on Seafoaming the intake tomorrow and changing plugs and oil at the same time.
The other thing is, with the B16B I still have the stock D-series exhaust( converter and all. I am getting this taken care of tomorrow at Midas(new high-flow cat with 2.5 inch exhaust) as well as asking the tech who owns a Type-R swapped Integra to look at it for me.( similar motors, so hopefully he MIGHT have some answers).
The only other two things I can think of other than the above is the TPS and MAP sensors.
Also, when idling there is a lope to the idle. I hesitate to call it a rough idle as the tachometer stays steady at idle( around 800 and is not too obnoxious) If I rev the motor at a light( even just blipping the throttle) I have noticed it will NOT hesitate. It still runs ok when at WOT, and VTEC still works great( hits hard at 6500 RPM).
Any educated guesses as to what the heck this might be? I have searched the forums and found similar problems, but nothing that matches anything like what I have described.
Thanks in advance for your help...
Hi
I am from South Africa and drive a 1994 Honda Ballade 180i(otherwise known as a Civic sedan).In the car is a B18B3 engine with a P34 ecu.I have also been experiencing the same symptoms as you and searched high and low.The MAP sensor was changed 3 times and the TPS was also replaced.Only after I changed the FUEL filter did the problm go away.Make sure that your fuel filter is open,simply remove and blow through the inlet side and see if you can do that.If you have difficulty doing so,replace the filter.The symptoms that you are experiencing could be fuel starvation and might also be coil related .
Good luck
#11
Honda-Tech Member
Thread Starter
Join Date: Sep 2009
Posts: 246
Likes: 0
Received 0 Likes
on
0 Posts
Re: JDM B16B/P28 using Crome: Backfiring, hesitation, bogging
Hi
I am from South Africa and drive a 1994 Honda Ballade 180i(otherwise known as a Civic sedan).In the car is a B18B3 engine with a P34 ecu.I have also been experiencing the same symptoms as you and searched high and low.The MAP sensor was changed 3 times and the TPS was also replaced.Only after I changed the FUEL filter did the problm go away.Make sure that your fuel filter is open,simply remove and blow through the inlet side and see if you can do that.If you have difficulty doing so,replace the filter.The symptoms that you are experiencing could be fuel starvation and might also be coil related .
Good luck
I am from South Africa and drive a 1994 Honda Ballade 180i(otherwise known as a Civic sedan).In the car is a B18B3 engine with a P34 ecu.I have also been experiencing the same symptoms as you and searched high and low.The MAP sensor was changed 3 times and the TPS was also replaced.Only after I changed the FUEL filter did the problm go away.Make sure that your fuel filter is open,simply remove and blow through the inlet side and see if you can do that.If you have difficulty doing so,replace the filter.The symptoms that you are experiencing could be fuel starvation and might also be coil related .
Good luck
Thread
Thread Starter
Forum
Replies
Last Post
stackedhouse
Honda CRX / EF Civic (1988 - 1991)
4
05-17-2012 05:37 PM
teggsr925
Honda Civic / Del Sol (1992 - 2000)
6
04-05-2010 04:39 PM
rig9896
Hybrid / Engine Swaps
4
09-22-2003 07:27 AM
rig9896
Tech / Misc
5
09-12-2003 08:06 AM