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| Weird power loss https://auszookers.com/forum/viewtopic.php?f=5&t=38427 |
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| Author: | Samwich [ Fri Jan 18, 2013 9:56 am ] |
| Post subject: | Weird power loss |
Hey guys, Resantly theres been another issue with the engine, (think it might be getting to the end of its life) When im between about 2000 - 3000 revs, when accelorating it feels like the engine is .. pulling back? kind feels like a bit of break is being put on the engine. It mainly happens in 2nd/3rd/4th around about 2100 revs. Any one know what this could be? might need a heart transplant.. |
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| Author: | atari4x4 [ Fri Jan 18, 2013 9:58 am ] |
| Post subject: | Re: Weird power loss |
blocked pussy? |
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| Author: | Gwagensteve [ Fri Jan 18, 2013 10:05 am ] |
| Post subject: | Re: Weird power loss |
Ignition breakdown? Steve |
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| Author: | Samwich [ Fri Jan 18, 2013 10:14 am ] |
| Post subject: | Re: Weird power loss |
Gwagensteve wrote: Ignition breakdown? Steve What's that steve? Dont know the world about cars haha, Googling it now |
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| Author: | droverdave [ Fri Jan 18, 2013 10:46 am ] |
| Post subject: | Re: Weird power loss |
It coudl be anything really. and i dont think a new engine will solve it. not knowing what engine you have... Fuel- hows the fuel pump? fuel filter clogged? air- i assume the air intake isnt blocked, long shot but is the filter full? spark - hows the ignition timing? hows the plugs? check leads for resistance? check the coil for resistance? ground straps on engine not damaged/removed? EFI- ecu throwing any codes? any sensors not performing like they should? (crack in map sensor vac line has got me before in other engines) Going on the lack of information you give, if you go though the above list of things, you might find a problem. |
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| Author: | Samwich [ Fri Jan 18, 2013 11:11 am ] |
| Post subject: | Re: Weird power loss |
droverdave wrote: It coudl be anything really. and i dont think a new engine will solve it. not knowing what engine you have... Fuel- hows the fuel pump? fuel filter clogged? air- i assume the air intake isnt blocked, long shot but is the filter full? spark - hows the ignition timing? hows the plugs? check leads for resistance? check the coil for resistance? ground straps on engine not damaged/removed? EFI- ecu throwing any codes? any sensors not performing like they should? (crack in map sensor vac line has got me before in other engines) Going on the lack of information you give, if you go though the above list of things, you might find a problem. Cheers man, Fuel - Filter ill replace in the next week, Air filter has been replaced, seems fine Spark - i have no clue, anything to check to see if the plugs are fine? Efi - Dont know about any codes, and yes its efi |
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| Author: | Gwagensteve [ Fri Jan 18, 2013 4:07 pm ] |
| Post subject: | Re: Weird power loss |
Right Samwich, I'm sitting in front of my computer now, not on my phone. As has been pointed out, it could be a huge number of things, but I think you can rule out a few. It shouldn't be fuel flow related. A long, hard pull in 3rd gear should prove that. If it stumbles and then clears once the engine moves out of a rev range, that's not normally fuel related for an EFI car - the biggest load on the fuel system is at high revs/high load. If it's fine up there I don't feel it can be fuel flow related. (blocked filter etc) Ignition breakdown means that when conditions in the cylinder are at their most demanding ( Normally full throttle and working up towards, but under, peak torque) the spark is getting extinguished or is weak. This can be because the leads are "leaking" power, the plugs are in poor condition, or there is another problem - cap/coil etc. If you intend keeping a G16B, (regardless of whether the one you have now is being replaced) then it might be worth replacing the cap, plugs and leads as a starting point. It's unlikely these items are in tip-top condition, and it's likely they are factory original. Even if it doesn't fix your problem, it will rule something out, and I bet you get a better idle and a generally healthier feeling motor out of it. (Which reminds me, I should do the same) Steve. |
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| Author: | Samwich [ Tue Jan 22, 2013 11:30 am ] |
| Post subject: | Re: Weird power loss |
Alright, thanks steve, Ill go and buy some leads tomorrow, Which cap are you taking about? the one ontop of the motor? High revs seems fine, Its anything below about 2k revs eg: i cant get any acceloration out of the car if its under 2K revs even in first.. Its shacking (as if stalling) at 900 - 1k idle Half power now, lacking heaps :/ |
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| Author: | droverdave [ Tue Jan 22, 2013 11:43 am ] |
| Post subject: | Re: Weird power loss |
Pull out the spark plugs and see what they look like before you buy anything. Take a photo of it, then clean them, a wire brush does wonders. Then put them back in and see how it goes. Also meausre the resistance in the spark plug leads before you buy anything, leads cost a fortune. Have a look at the distributer cap, if its corroded then yer maybe get a new one, but at least clean it first and see if it gets better before you hand over your cash. |
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| Author: | Gwagensteve [ Tue Jan 22, 2013 11:46 am ] |
| Post subject: | Re: Weird power loss |
As per droverdave, I was talking about the distributor cap. |
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| Author: | Samwich [ Tue Jan 22, 2013 11:59 am ] |
| Post subject: | Re: Weird power loss |
droverdave wrote: Pull out the spark plugs and see what they look like before you buy anything. Take a photo of it, then clean them, a wire brush does wonders. Then put them back in and see how it goes. Also meausre the resistance in the spark plug leads before you buy anything, leads cost a fortune. Have a look at the distributer cap, if its corroded then yer maybe get a new one, but at least clean it first and see if it gets better before you hand over your cash. Thanks, Took the leads out and checked them last night, they seemed normal? (to someone with no experence anyway) How do i measure the resistance of the plugs? |
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| Author: | droverdave [ Tue Jan 22, 2013 12:07 pm ] |
| Post subject: | Re: Weird power loss |
you want to measure the restistance of the leads, not the plugs. You use a multi meter. Check the service manual as to what the resistance is supposed to be. i assume you mean teh spark plugs looked normal. Did you clean them? This is a reasonable guide. http://www.ngksparkplugs.com/tech_suppo ... aqread.asp Also it might be worth checking the spark plug gap as well. dunno what its supposed to be, someone will know or check the service manual. |
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| Author: | Samwich [ Tue Jan 22, 2013 12:12 pm ] |
| Post subject: | Re: Weird power loss |
Cheers Dave, I didnt clean them, to hot at that point in time, I have had huge cooling issues aswell lately, New raditor ready to go in, just need the time :/\ Ill check my maunal, got one of the big ones off ebay awhile ago, just havent had a look And ill clean the plugs tonight |
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| Author: | Samwich [ Tue Jan 22, 2013 12:21 pm ] |
| Post subject: | Re: Weird power loss |
Read that website... ill check them again, (think i checked the wrong thing. Might be farked due to my over eating issues |
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| Author: | jimnynutter [ Thu Jan 24, 2013 2:56 pm ] |
| Post subject: | Re: Weird power loss |
Samwich wrote: Might be farked due to my over eating issues Not that fat now are you? |
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| Author: | Samwich [ Thu Jan 24, 2013 2:58 pm ] |
| Post subject: | Re: Weird power loss |
Heating
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| Author: | Samwich [ Mon Jan 28, 2013 3:22 pm ] |
| Post subject: | Re: Weird power loss |
so replaced the spark plugs and it made it worse.... now the car will stall without the foot on the pedal... wtf?? |
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| Author: | atari4x4 [ Mon Jan 28, 2013 3:34 pm ] |
| Post subject: | Re: Weird power loss |
did you get the plug leads seated properly? |
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| Author: | Samwich [ Mon Jan 28, 2013 3:37 pm ] |
| Post subject: | Re: Weird power loss |
Yeah they are seated fine .... really wweird |
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| Author: | atari4x4 [ Mon Jan 28, 2013 3:45 pm ] |
| Post subject: | Re: Weird power loss |
what plugs did you put in it? |
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| Author: | scorpydude [ Mon Jan 28, 2013 3:51 pm ] |
| Post subject: | Re: Weird power loss |
I had this in my Sierra. Found it was shorting between alternator and the overhang from my accelerator / throttle cable. So only when i planted my foot would it be close enough to short as the plastic cover was not over the alternator cable and it was also angled the wrong way. |
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| Author: | Samwich [ Mon Jan 28, 2013 3:53 pm ] |
| Post subject: | Re: Weird power loss |
New ones from the shop Brand is ngk |
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| Author: | royce [ Mon Jan 28, 2013 4:11 pm ] |
| Post subject: | Re: Weird power loss |
no power overheating losing coolant see a pattern here |
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| Author: | joel [ Mon Jan 28, 2013 4:13 pm ] |
| Post subject: | Re: Weird power loss |
atari4x4 wrote: blocked pussy?  stop |
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| Author: | carebear [ Wed Feb 06, 2013 9:06 am ] |
| Post subject: | Re: Weird power loss |
Are you certain all pistons are firing? Might need to do a compression test. I've got a similar issue and it's not a cheap fix. Also, it sounds like the distributor cap firing order could be wrong if you got them mixed up when changing over spark plugs. |
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| Author: | Samwich [ Wed Feb 06, 2013 9:08 am ] |
| Post subject: | Re: Weird power loss |
didnt mix em up man, Took 1 lead/ installed spark plug out at a time |
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