My 1988 thunderbird turbo coupe has a ticking noise in the top end of the engine. Its consistant with rpms..... the previous owner said he ran it a little hard one day and the rocker arm came loose... he said he fixed it. But it had a ticking noise afterward. Could this be a cam problem.. rocker arm issue... or a collapsed lifter?? The engine runs smooth just noisy. Thanks for your help.
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check that the turbo is actually working at the lower rpms.check to see if it is a variable vane turbo where the vanes for the turbine wheel can be altered to produce boost at lower rpms. The vanes are controlled by a actuator on the turbo and is controlled by a vacuum hose controlled by the ECM. The misfiring may be actually over fuelling ( mixture too rich as the boost is too low for the mixture)
Relay is inside the ICM (Integrated Control Module) right ahead of the right shock tower. The inertia switch should be in the trunk, on the right side.
It is your fuel pump it has to put out at least 30psi at the fuel rail. Regardless of how much gas you think its getting its not enough. Replace the fuel pump.
the chances are you have done the shell bearings on the cranck shat in or the big ends if it is a loud knocking noise or possibly the turbo (is their any smoke from engine bluey in colour if this is so engine has been damaged it could also be the camshaft too without hearing it it could be anything )hope i have helped you
did anyone check the converters or mufflers as converters will come apart and land up in the mufflers.try taking off the front pipe off the engine and dirve it and see if there is any improvement!!
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