paisesmediterraneos Posted September 29, 2018 Share Posted September 29, 2018 Hello, I am David from the south of Spain, I recently bought a 2003 Caterham Seven 1.6 k series roadsport. When I depress the gas pedal the car goes giving pulls, and more when the car is cold. When I depress the gas pedal in neutral everything is ok, but when I engaged a gear and begin driving, the car begins giving pulls. I checked the spark plugs and the car has NGK PFR6N-11. I was checking at NGK web and they recommends for the car NGK BKR6E.Do you think the car is doing this because it has the wrong plugs??. Thank you very much, best wishes. Link to comment Share on other sites More sharing options...
Jim 123 Posted September 29, 2018 Share Posted September 29, 2018 What gap are your plugs currently set to? Also at the ends of each plug where you get the spark (the electrode), are all showing the same colour? Remember you can upload photos to this site which maybe helps if translation is a problem.Do you get the "pulls" across the full range of engine revs e.g. Say in 3rd gear from 1,000 all the way to 6,000 rpm? Link to comment Share on other sites More sharing options...
paisesmediterraneos Posted September 29, 2018 Author Share Posted September 29, 2018 Hello Jim,the plugs are now 1 or 1.1milimeters gap, I found in the NGK catalogue that the plugs it has now (KGK PFR6N-11) are recommended for the engine 1.8K but for the engine 1.6K they recommended different plugs (NGK BKR6E).The pulls finish at 3.000rpm more or less, but sometimes (more when it´s cold) it´'s difficult to arrive driving to 3.000rpm...a lot of pulls. Regards, David. Link to comment Share on other sites More sharing options...
paisesmediterraneos Posted September 30, 2018 Author Share Posted September 30, 2018 I realized reading many posts that there use to be many problems with the fuel pump in Caterhams...do you think the pulls I am noticing could be because a fuel pump failure??. Sometimes when I stop at traffic lights the engine idle is a little unstable. Link to comment Share on other sites More sharing options...
Jim 123 Posted September 30, 2018 Share Posted September 30, 2018 PM sent Link to comment Share on other sites More sharing options...
paisesmediterraneos Posted October 2, 2018 Author Share Posted October 2, 2018 Jim, thank you very much for helping me with the problem.Thanks to you I learnt that the problem of the car is called "misfire" in english, I didn´t know about this term, this is why I was writing that the car was "giving pulls".Thanks to you I also found that the origin of the misfire was in the Lambda sensor.Best wishes from the south of Spain. Link to comment Share on other sites More sharing options...
revilla Posted October 2, 2018 Share Posted October 2, 2018 I think we kind of guessed what you meant by "giving pulls" Glad to hear Jim 123 got you all sorted. Link to comment Share on other sites More sharing options...
Jim 123 Posted October 2, 2018 Share Posted October 2, 2018 Could somebody give David the correct part number and a supply source for a replacement Lambda for a 1.6 K Roadsport please. My car is a Ford engine. Link to comment Share on other sites More sharing options...
revilla Posted October 2, 2018 Share Posted October 2, 2018 For EU2 engines (distributor type), Rover MHK10006For EU3 engines (two coil packs on top of the plugs), Rover MHK100840Item number 8 here: https://rimmerbros.com/Item--i-GRID001113The only difference between them is the connector, to match an EU2 or EU3 loom. Link to comment Share on other sites More sharing options...
paisesmediterraneos Posted October 3, 2018 Author Share Posted October 3, 2018 Thank you Revilla for the technical information about the Lambda sensor; mine is EU3, I found for selling in Spain, with the reference you gave me, a sensor built by Magneti Marelli with a nice price. Link to comment Share on other sites More sharing options...
revilla Posted October 3, 2018 Share Posted October 3, 2018 Link to comment Share on other sites More sharing options...
Recommended Posts
Create an account or sign in to comment
You need to be a member in order to leave a comment
Create an account
Sign up for a new account in our community. It's easy!
Register a new accountSign in
Already have an account? Sign in here.
Sign In Now