Author |
Message |
Peter Abdelmessih
Tinkerer victoria 2.5 GTTL
Posts: 63 Reg: 05-2006
| Hi guys, i ran my car at calder and was happy with my results, but now the car started to play up again. As i put my foot down, it starts to pop in the high rev range, and it starts to clag. It feels like a fuel problem. Now please if any one has any idea with whats wrong, please reply back. |
Shane Bradley
Tinkerer WA Supra JZA70 LTD
Posts: 44 Reg: 11-2005
| Coilpacks And/Or Spark Plugs |
Yang Luo
TryHard vic soarer twin turbo manual
Posts: 300 Reg: 04-2006
| get new spark plugs 0.7mm |
Vinh Bui
DieHard NSW 94 UZZ31 (V8) / 96 JZZ30 (TT)
Posts: 942 Reg: 07-2005
| Yep, what Shane said! Best to get them checked out and report back about the results of the inspection. |
Michael O'Driscoll
TryHard Victoria TT
Posts: 102 Reg: 10-2005
| Your going to have to go through the coil packs to get to the plugs, so if the coil packs look fine, then check the plugs. Good luck |
Peter Abdelmessih
Tinkerer victoria 2.5 GTTL
Posts: 65 Reg: 05-2006
| How can i tell they are fine?? |
Maurice Diggler
TryHard Victoria Twin Turbo
Posts: 396 Reg: 06-2006
| Check for cracks in them. |
Nathan Evans
DieHard Queensland 1JZZ30 TT
Posts: 550 Reg: 07-2005
| all too familiar to me, there are so many small things, id check your plugs and coilpacks, then check out your fuel system |
Adam Olsen
Tinkerer South Australia Cressida GLX-i
Posts: 7 Reg: 10-2005
| I had the same problem on my 1j and after regapping spark plugs, checking coil packs, it ended up being a blocked fuel filter. This can happen mostly if you have run it below a quarter tank and its picked up a bit of gunk from the bottom of the tank. Does it feel like if you accelerate mildly at a constant rate its ok, but when you put your foot down it just pops and farts all over the place!? haha it almost feels like its starving for fuel rather than losing spark |
Peter Abdelmessih
Tinkerer victoria 2.5 GTTL
Posts: 66 Reg: 05-2006
| Yes that's exactly rite, it accelerates ok at a constant rate, but when i put my foot down it just pos and farts all over the place. What could it be because i already serviced my car and changed my fuel filter about a month ago. But i still haven't had the chance to check my coil packs or spark plugs yet. |
Nathan Evans
DieHard Queensland 1JZZ30 TT
Posts: 561 Reg: 07-2005
| try your spark plugs first, re-gap then and se if that works, and check your coils at the same time. Then work from that. When i checked my plugs they were all over the shop |
Lew Radbourn
Trader Queensland jzz30 ute / uzz30/ 2 X uzz31
Posts: 1401 Reg: 07-2005
|
Nathan Evans wrote on Wednesday, October 25, 2006 - 04:45 pm:all too familiar to me, there are so many small things, id check your plugs and coilpacks, then check out your fuel system
Peter; get the car on a dyno or some were that can check your air fuel ratios do this after you do your plugs and have check your coils. some poping can be lean fuel pops and that isn't a very good thing.... cheers Lew |
Drew Hiron
TryHard Queensland Soarer TT
Posts: 137 Reg: 08-2005
| heh i had this exact same problem and it was the plugs. replaced those buggers and gapped them down and havent had a problem since. ofcourse thats the cheapest and eaiest thing to test for so start there mate |
Peter Abdelmessih
Tinkerer victoria 2.5 GTTL
Posts: 67 Reg: 05-2006
| What plugs are you using?? And what did you gap them to?? |
Rob Andreacchio
Moderator Victoria Supercharged VT Calais & 1991 JZZ30
Posts: 1956 Reg: 01-2005
| Peter, Use NGK BKR6E's gapped to .8mm and see how that goes With your mods, I wouldn't be going down to .7 just yet.... |
Wai Fung Hui
Newbie SA TT
Posts: 3 Reg: 09-2006
| i have the same problem too..... I want to change the spark plugs and try before check other part..... (bcos its cheaper than change all six coils = _ =" ) which spark plugs have 0.7mm gap without re-gapping 0.8mm one? is this BKR6E7 ? |
Joe Radisic
Newbie WA Turbo
Posts: 3 Reg: 10-2006
| I had popping and back firing, i took it in to Toyota and had them give me answers. Popping cleared after replacing the throttle position sensor there diagnostic computer picked it up. And backfiring was cause by faulty boost controller solenoid on old profec b, causing it to over boost and boost cut. Since new PBspec2 and haltech intercepter runs sweet. |
Joe Radisic
Newbie WA Turbo
Posts: 4 Reg: 10-2006
| also backfiring blew out my cat, and is very bad for turbo wheels so its not advised to drive hard until the problem is fixed. |
Rob Andreacchio
Moderator Victoria Supercharged VT Calais & 1991 JZZ30
Posts: 1957 Reg: 01-2005
| Wai, you will have to regap the plugs. they dont make ones with a .7 gap. Thry have a .8 or a 1.1 in the BKR6E's. |
Wai Fung Hui
Newbie SA TT
Posts: 4 Reg: 09-2006
| how many boost normally would cos this problem? my popping problem would appear around 5500rpm, just sometime appear at high rev. my car running 13psi |
Yang Luo
TryHard vic soarer twin turbo manual
Posts: 331 Reg: 04-2006
| Wai i think there is something wrong with your turbine.it might be the previous owner boost too high above 16psi for daily driving. |
Wai Fung Hui
Newbie SA TT
Posts: 5 Reg: 09-2006
| no = _ = today, i check out for my 6 plugs..... It is using 1.1mm one!! not 0.8mm, i think here is the problem. i will get a 0.8mm plugs to put it in and see how its going |
Yang Luo
TryHard vic soarer twin turbo manual
Posts: 332 Reg: 04-2006
| good luck mate |
Wai Fung Hui
Tinkerer SA TT
Posts: 7 Reg: 09-2006
| today, i put the 0.8 one in and it's no popping at all~ thank you everyone!!~ ^-^ |
Yang Luo
TryHard vic soarer twin turbo manual
Posts: 341 Reg: 04-2006
| enjoy your soarer mate |
Wai Fung Hui
Tinkerer SA TT
Posts: 8 Reg: 09-2006
| heeha~ actually I'm newer on the soarer and My soarer is the first turbo car for me. |
Peter Abdelmessih
Tinkerer victoria 2.5 GTTL
Posts: 69 Reg: 05-2006
| Hi guys, I re-gapped my spark plugs to 0.8mm, checked my coil packs and seemed fine to me because there was no cracks. Took the car for a spin and it didn't pop but was hitting boost cut even though i've got no boost controller connected. So, i'm guessing one of my actuators is stuffed causing it to over boost by shutting longer than the other one. Now its popping again, what else could be the problem?? I am going crazy. |
Braden Murdoch
TryHard NSW Cressida 1JZ TT
Posts: 226 Reg: 04-2006
| Maybe your exhaust has very little restriction and is allowing it to overboost? When I fitted twin dumps and panned it up hills etc it would hit boost cut from time to time. Fit up a fuel cut defender and see how you go. You can make your own for about $2. Just need 2 diodes and a variable resistor, or even just a zener diode. There is a circuit for it on toymods. |