Method for removing engine deposits in a reciprocating internal combustion engine

A method for removing engine deposits in a reciprocating internal combustion engine which comprises introducing a cleaning composition into the air-intake manifold of a warmed-up and idling reciprocating internal combustion engine and running the engine while the cleaning composition is being introduced, said cleaning composition comprising:

• a first solution comprising a mixture of:
• (a) a phenoxy mono- or poly(oxyalkylene) alcohol having the formula:
• wherein R and R1 are independently hydrogen or methyl and each R is independently selected in each —CH2—CHR—O— unit;
• and x is an integer from 0 to 4;
• or mixtures thereof;
• (b) at least one solvent selected from
• (1) an aliphatic alcohol;
• and
• (2) aliphatic or aromatic organic solvent wherein said at least one solvent is different from component a);
• (c) at least one nitrogen-containing detergent additive;
• and a second solution comprising a mixture of:
• (d) a phenoxy mono- or poly(oxyalkylene) alcohol having the formula:
• wherein R and R1 are independently hydrogen or methyl and each R is independently selected in each —CH2—CHR—O— unit;
• and x is an integer from 0 to 4;
• or mixtures thereof;
• (e) a cyclic carbonate;
• and
• (f) water.