jacksargent93 Posted July 12, 2013 Share Posted July 12, 2013 Whilst accelerating it feels as if I loose power for a few seconds - everyone just thinks I'm being paranoid. But it feels even though I'm accelerating for a few seconds I dont progress in speed and can feel it 'cut out'. I have noticed it to happen just before 3000rpm in every gear apart from 1st. If anyone has experienced this or know what this could be any one I would appreciate :) Thanks a lot Quote Link to comment Share on other sites More sharing options...
crimeblitz1 Posted July 12, 2013 Share Posted July 12, 2013 Mines the same, 2010 1.6 tdci. I'm paranoid that its a turbo problem so am going to get it checked, it's like the guts of the car disappear, maybe the turbo runs for a very short period...... Hopefully I'm wrong, I was spoiled before with a Leon Cupra tdi 150 and that was exceptionally quick compared to the focus (compared to a lot of cars actually) I was actually disappointed when I took my focus out for its first proper drive :( Quote Link to comment Share on other sites More sharing options...
FOCA Posted July 13, 2013 Share Posted July 13, 2013 One of you has an NA (naturally asperated/ non turbo) petrol engine and the other a turbocharged diesel engine - they are different but can both suffer from flat spots/ hesitation etc they are set up for emmisions/ economy and not performance 4-cld NA Petrol - can suffer from a midrange flat spot, its to do with the valve overlap and the exhaust,the fuelling (set for emmisions/ ecomomy) does not help either. You don't notice it in 1st because its a lighter load (you "rev-through it" quickly but the flat spot is still there) but a good service helps (could also potentially be plugs/ ht leaads or coil paks) its typical of this sort of car - some drivers might not notice it but they all have a flatspot in the midrange Turbo- diesel - can be sluggish before it reaches the boost threshold, turbo-lag, flat spots and hesitation due to the EGR valve (at certain (low) revs/ loads)(have you fitted a solid blanking plate yet?) torque and power can drop off at higher revs / narrow power band (especially noticable in the lower gears) / some fords have overboost (boost runs for short period then drops off) small intercoolers suffer from heatsoak - Petrol and diesel - noticable power loss in higher atmospheric temps - + increased lag in the turbo-diesel and flat spot/ hesitation worse on the petrol NA (higher intake air temps can show up the "glitches" worse) Quote Link to comment Share on other sites More sharing options...
jacksargent93 Posted July 13, 2013 Author Share Posted July 13, 2013 One of you has an NA (naturally asperated/ non turbo) petrol engine and the other a turbocharged diesel engine - they are different but can both suffer from flat spots/ hesitation etc they are set up for emmisions/ economy and not performance 4-cld NA Petrol - can suffer from a midrange flat spot, its to do with the valve overlap and the exhaust,the fuelling (set for emmisions/ ecomomy) does not help either. You don't notice it in 1st because its a lighter load (you "rev-through it" quickly but the flat spot is still there) but a good service helps (could also potentially be plugs/ ht leaads or coil paks) its typical of this sort of car - some drivers might not notice it but they all have a flatspot in the midrange Turbo- diesel - can be sluggish before it reaches the boost threshold, turbo-lag, flat spots and hesitation due to the EGR valve (at certain (low) revs/ loads)(have you fitted a solid blanking plate yet?) torque and power can drop off at higher revs / narrow power band (especially noticable in the lower gears) / some fords have overboost (boost runs for short period then drops off) small intercoolers suffer from heatsoak - Petrol and diesel - noticable power loss in higher atmospheric temps - + increased lag in the turbo-diesel and flat spot/ hesitation worse on the petrol NA (higher intake air temps can show up the "glitches" worse) My car was serviced before I received it so I don't know what to do — get it serviced again? As you said these cars suffer from it. So I suppose its a normal thing to happen? Quote Link to comment Share on other sites More sharing options...
FOCA Posted July 13, 2013 Share Posted July 13, 2013 This is the Superchips Bluefin power and torque curves (for the Focus mk1 1.6 98Hp, but the same idea )- http://www.mybluefin.co.uk/curves/focus16.pdf If you look at the blue line on the torque curve, it drops just after 3k, it does not start to rise again untill 3-1/2K, and above before it (the torque) rises to the level it was before 3k, this would be called a "midrange flat-spot" but some drivers may describe this as "hesitation"/ a "glitch" etc - ideally the graph (torque) should rise smoothly or stay level with no "dips" in it untill the redline What was done at the service? - you would expect the oil and filter to be changed, the air filter and the spark plugs, genuine Ford spark plugs are good, but irridium NKGs are better, i would personally gap them down to 0.8mm (rather than 1.0mm) using the correct tool (and feeler gauges) - this protects the HT (high tension) leads and coil packs, + the plugs are also less liable to miss-fire, even if they get fouled Also - any modifications can have an adverse effect if they are not done right You don't know how much i hate saying this but premium high octane fuel may help too - try it and see if it helps (and keep the fuel high - if the "low fuel" light comes on the ECU can go into "eco" mode + a high fuel level helps to keep the fuel pressure/ supply up) Quote Link to comment Share on other sites More sharing options...
jacksargent93 Posted July 13, 2013 Author Share Posted July 13, 2013 Its just strange, I have had the car 2 months and I only notice it now? But I will try the high octane a go and see if I can narrow this down a bit. Thanks a lot mate! Quote Link to comment Share on other sites More sharing options...
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