Good answer from Mike try checking your spark plug gap also is this engine overheating feel the top hose for heat and boiling inside if so when the engine is cool check the coolant inside the degas bottle if it is reddish brown or a greenish or tan gritty residue there's stop leak in the engine and you must get this out because it clogged everything up and it will make the engine temperature very high which will burn up the fuel air mixture causing the engine rpms to raise making it run even hotter and the cooling fan/s will constantly keep coming on with in 30 seconds of the last time also the transmission fluid will be burnt causing the tranny to slip and need more gas pedal to move =higher engine temperature
Also very good answer. Some parts seem familiar. Enuff to chk out. Thanks Stephen. I had all fluids & filters chk'd & thusly changed just after car came to me. It was needed! But I have experienced some of this I.e. granny occasionally having a " slip" or hesitation . very intermitant & slight but I notice. & minor on other u touched o & not some. Ill C. Back attcha later.Also very good answer. Some parts seem familiar. Enuff to chk out. Thanks Stephen. I had all fluids & filters chk'd & thusly changed just after car came to me. It was needed! But I have experienced some of this I.e. granny occasionally having a " slip" or hesitation . very intermitant & slight but I notice. & minor on other u touched o & not some. Ill C. Back attcha later.
If you're sure the engine is running cool enough check the fuel pressure, low fuel pressure can vapor lock if the engine is hot enough the gas will boil. The boiling point of 87 octane is 181 degrees Fahrenheit although gas is constantly being returned to the tank in order to cool the fuel rail low pressure will not return enough leaving room in the rail for gas to boil. Ignition coils are also known to break down when hot. I hope this helps. Take care.
Answers & Comments
Good answer from Mike try checking your spark plug gap also is this engine overheating feel the top hose for heat and boiling inside if so when the engine is cool check the coolant inside the degas bottle if it is reddish brown or a greenish or tan gritty residue there's stop leak in the engine and you must get this out because it clogged everything up and it will make the engine temperature very high which will burn up the fuel air mixture causing the engine rpms to raise making it run even hotter and the cooling fan/s will constantly keep coming on with in 30 seconds of the last time also the transmission fluid will be burnt causing the tranny to slip and need more gas pedal to move =higher engine temperature
Also very good answer. Some parts seem familiar. Enuff to chk out. Thanks Stephen. I had all fluids & filters chk'd & thusly changed just after car came to me. It was needed! But I have experienced some of this I.e. granny occasionally having a " slip" or hesitation . very intermitant & slight but I notice. & minor on other u touched o & not some. Ill C. Back attcha later.
If you're sure the engine is running cool enough check the fuel pressure, low fuel pressure can vapor lock if the engine is hot enough the gas will boil. The boiling point of 87 octane is 181 degrees Fahrenheit although gas is constantly being returned to the tank in order to cool the fuel rail low pressure will not return enough leaving room in the rail for gas to boil. Ignition coils are also known to break down when hot. I hope this helps. Take care.