Hesitation/miss under load
#31
06-07-2016 | 08:03 PM
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Joined: May 2011
Posts: 451
Rep Power: 36
I have go thru the hesitation issue 5 years ago, it was fine to drive, but once you get into boost, around 5000rpm it would backfire and hestitated. It was a real painful investigation for 3 months.
As per advised, coils and plugs(replaced not less than 3 times during the period), MAF old and new interchange at the road side. Header, intercooler hoses and almost all vacuum hoses were replaced.
Finally, it was the first thing we checked, the fuel pump, it just didnt totally gone, but in centain rpm it didnt provide enough fueling and it wasnt happening all the time...
As per advised, coils and plugs(replaced not less than 3 times during the period), MAF old and new interchange at the road side. Header, intercooler hoses and almost all vacuum hoses were replaced.
Finally, it was the first thing we checked, the fuel pump, it just didnt totally gone, but in centain rpm it didnt provide enough fueling and it wasnt happening all the time...
#32
06-07-2016 | 09:40 PM
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Registered User
Joined: Jan 2016
Posts: 362
From: Campbell River,BC
Rep Power: 50
I have go thru the hesitation issue 5 years ago, it was fine to drive, but once you get into boost, around 5000rpm it would backfire and hestitated. It was a real painful investigation for 3 months.
As per advised, coils and plugs(replaced not less than 3 times during the period), MAF old and new interchange at the road side. Header, intercooler hoses and almost all vacuum hoses were replaced.
Finally, it was the first thing we checked, the fuel pump, it just didnt totally gone, but in centain rpm it didnt provide enough fueling and it wasnt happening all the time...
As per advised, coils and plugs(replaced not less than 3 times during the period), MAF old and new interchange at the road side. Header, intercooler hoses and almost all vacuum hoses were replaced.
Finally, it was the first thing we checked, the fuel pump, it just didnt totally gone, but in centain rpm it didnt provide enough fueling and it wasnt happening all the time...
#33
06-10-2016 | 12:35 AM
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Joined: Jan 2016
Posts: 362
From: Campbell River,BC
Rep Power: 50
2004 996tt....have a miss/hesitation under load .Engine idles smooth and runs great until it starts to build boost under a hard pull, also makes a strange noise. Thought maybe coils or plugs but check engine light does not come on. 85000 kms (53000 miles) on engine. Something to do with the turbo system??? Any input would be greatly appreciated. 
#35
06-24-2016 | 04:13 PM
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Registered User
Joined: Jan 2016
Posts: 362
From: Campbell River,BC
Rep Power: 50
2004 996tt....have a miss/hesitation under load .Engine idles smooth and runs great until it starts to build boost under a hard pull, also makes a strange noise. Thought maybe coils or plugs but check engine light does not come on. 85000 kms (53000 miles) on engine. Something to do with the turbo system??? Any input would be greatly appreciated.
#36
06-25-2016 | 02:47 AM
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Joined: Apr 2012
Posts: 1,603
From: Atlanta
Rep Power: 113
That gap is way to much for plugs.
#38
06-25-2016 | 06:32 AM
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Joined: Dec 2008
Posts: 5,551
From: tn
Rep Power: 626
he isnt saying thats what the gap originally rather thats what the gap was when pulled. the plugs are worn down on both sides according to the op
#39
06-25-2016 | 09:11 AM
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Joined: Jan 2016
Posts: 362
From: Campbell River,BC
Rep Power: 50
Bought the car in January. Previous owner kept no records and likely never changed the plugs or coils. Figure oil in intercooler coming from bad seal in turbo so removed the turbo and sent it off for a reseal.
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