Help us help you. By posting the year, make, model and engine near the beginning of your help request, followed by the symptoms (no start, high idle, misfire etc.) Along with any prevalent Diagnostic Trouble Codes, aka DTCs, other forum members will be able to help you get to a solution more quickly and easily!
2002 sequoia 4.7 replaced feul pump and feul filter. spray starting fluid and it will start also replaced feul pump relay no hrlp code c1234 and c1203 diiagnostic check
IF the engine keeps running after starting on external fuel and you have a scantool look for the throttle position sensor. It may be at fault indicating clear flood. Otherwise more info will be needed.
An expert is someone who knows each time more on each time less, until he finally knows absolutely everything about absolutely nothing.
Low fuel pressure is the prime (!) suspect. Injection engines need max fuel pressure at cranking. Note *PRESSURE* a simple check for fuel won't tell you anything useful.
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