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sebastian manrique
sebastian manrique, Auto Mechanic
Category: Car
Satisfied Customers: 3466
Experience:  Director Ejecutivo at Multiservicios Cruz de las Mercedes
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Well it is a no start it cranks... the rev counter moves but

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Well it is a no start it cranks... the rev counter moves but doesn't fire... I have replaced the fuel pump and sender, plugs , cleaned the injectors and throttle body , coil pack and ht leads, crank sensor and map sensor so I am now not sure ???
JA: Are you certain it's the fuel pressure sensor that's in need of attention? What about the fuel rail? Have you checked it yet?
Customer: Yes not checked the fuel pressure sensor ??
JA: What is the model/year of your Renault?
Customer: its mk3 ph2 1.2 16v 2009
JA: Are you fixing your vehicle yourself? What have you tried so far?
Customer: I am replaced everything as listed above
JA: Is there anything else the Mechanic should know before I connect you? Rest assured that they'll be able to help you.
Customer: don't think so

Hello, I am Jose Sebastian. Your automotive expert, It's a pleasure to me to attend your question. Thank you very much for trust in just answer.

Dear customer, the engine turns but does not start?

Customer: replied 5 days ago.
Customer: replied 5 days ago.
no its ok
Customer: replied 5 days ago.
it does seem to have a very week spark

Dear customer, your engine is the 1.2 petrol engine, correct?

Have you done any diagnostics to check if you have any fault codes, especially concerning the crankshaft sensor?

Customer: replied 5 days ago.
I have replaced the crank sensor

Dear customer, thank you for clarifying, I would like to know how this happened?

Did you check the distribution system for damage?

Customer: replied 5 days ago.
all looks good there's fuel at the injectors etc but a weak spark

how did this happen?

Customer: replied 5 days ago.
bought it like that

Dear customer, I am between two faults:

one is that the distribution system is out of time.

The other is that the computer is not giving a good injection pulse.

Customer: replied 5 days ago.
the injection pulse looks good when tested but the plugs give a really weak spark that is small and yellow in colour not large and blue in colour ??

Dear customer, that loss of power in the coil may be due to the distribution system being out of time.

But even if there is a pulse in the ECU, it may not be arriving correctly, which means that it does not give enough power.

Customer: replied 5 days ago.
ok solution is ??

Dear customer, first, check the timing system set-up, and second, check with another ECU. I believe that the problem lies in one of these two factors.

I would also include the electrical wiring and ground check.

Customer: replied 5 days ago.
ok I will do that tomorrow and come back to you ....

I hope this info to be helpful, my goal is to give you the best advice i can, I hope to be helpful, if you have any doubt or want to know anything else please do not hesitate to reply back.

Kind regards, Sebastian.

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